Congrats shibbybides!
it's really nice of you to write such a comprehensive post on the interview process

i'm sure those going for the upcoming interview will find it very useful.
i went for the last recruitment (21st April) and have been helped a great deal by so many wonderful people on this forum (thank you so much esp
M, Intrinsic Dreamer, Dylla, thinkerbelle, buzzzybeebee!) Like shibbybides, i would like to share my experience and hope it'll help others
For the girls, the process is like what shibbybides wrote+ the kebaya round.
During the walk-in interview held at the hotel, there was 3 rounds.
1) Group of Ten
Qn posted to us: What do you plan to do this weekend?
Honestly, i was a little stunned as i was expecting qns like 'why do you want to join SIA'. Don't worry too much abt memorizing what to say as the question can be unexpected like in my case. Just keep smiling and be confident, ultimately, the way you present yourself may be more important that the content of your speech
Passing rate for my group: 3/10
2) Kebaya Round
the staff in there measured our height and weight, then we had to pick a kebaya hung on the rack and quickly change into it. There were no sizes on the kebayas so we have to estimate the size and pray it fits (mine was too tight lol). If it really doesn't fit and time permits, quickly find another one. Have to pick a pair of sandles too

After that we were told to hold a tray and walk around 10m across the room to another staff then turn and walk to the side too. It'll be good to keep your posture straight and keep smiling

The lady then asked me whether i had applied for SIA before and the furthest round i got to.
Next, we headed to a beautician at the side. She had 2 big white lamps and asked me to turn to my left, right, back (check the neck area) and stretch out my hands. I was trembling very badly but the beautician was really nice and told me 'Don't worry, you're okie.'
Lastly, we changed out of the kebayas and waited for the results.
Passing rate for my group: 9/10
3) 1 to 1 Interview
My interviewer was a young lady and she was again really nice, kept smiling

She asked me questions like
- How i got my present job
- Am i willing to give up my studies for SIA
- How long i forsee myself in this job
- Encounters of difficult customers
- My family's reaction to me wanting to join SIA
After that had to read an english passage (mine was about a baggage carousel

) If successful, the lady will hand you a slip of paper to go outside and choose your date for Water confidence.
Passing rate for my group: Around half
Total time spent at the hotel, from 8.30am to around 2.30pm
4) Water-confidence
(mine was 2 weeks after the initial interviews but there are earlier dates)
It's the same as what shibbybides mentioned except no stripping to trunks

i really thought i'll get kicked out in this round as i'm afraid to take the jump and i have bad skin especially on my back. but don't be afraid as it's not very high (less than 3m above the water surface) and we have life-vests

i hesitated before jumping which is bad as your fear will set in but i told myself: 'i'm not going to let myself get kicked out cause i'm afraid to jump!'
Plop! before i knew it i was in the water, it's actually quite fun
For the skin check, we had to walk towards a lady, turn round, then walk back to her. She will then check our skin, should be looking out for scars/tattoos. The skin-check was really fast, around 2 min including the walking
After that, we showered, changed and waited for the results.
Passing rate for my group: around 22/24
5) Management Interview
The interviewers (1 lady, 1 man) didn't ask me specific questions on SIA, but my group-mate was posed inflight scenerio-based questions. It was like a casual chat and the atmosphere was quite relaxed but don't forget it's still an interview, i got carried away and slipped in a few lahs and lors.
Questions asked:
1) Whether i got a placing in a uni
2) Whether it was worth giving up my uni education for a job that may not be permanent (heard air-stewardess have a max of 15 yrs), reminding me that it is tough to survive in Sg without a degree.
3) What i consider as a 'bad' customer
4) Whether my family supported my decision
The questions are pretty similar to the 1-1 interview but with senior management personnel so have to be more aware of body language and presentation. For my interview, the man asked most of the questions while the lady seemed to be focusing more on my body language. If i'm not wrong, she was writing notes through the interview. Looking back, i felt that i had not maintained more eye-contact with the lady which is a bad point. I think it'll be good to make an effort not to 'neglect' any of the interviewers

After that, had to wait 5min for the results (nerve-wrecking as always lol) If successful, we'll have a letter asking us to do medical check-up at an appointed doctor. We also have to fill in a form on bank account info.
Passing rate for my group: 3/4
i'm currently waiting for my medical results and anything can still happen.. (glup) but no matter the end result, i am really grateful for everyone on this forum whom has helped me. It's been a blessing finding so many like-minded people who have a dream to join SIA. The camaradie is no doubt encouraging! Let's keep this spirit going and i sincerely hope all of us will be able to achieve our dream!
PS: sorry i edited this post a few times, found many grammer/spelling mistakes. If there are others i missed out i'm sorry *blush*