Sepang MotoGP

[TF]

I've just arrived from Australia (almost a whole week ago). I'd appreciate advice on going to Sepang for the MotoGP this weekend.

In particular, help on any of these points would be great:
- I gather the crossing to Malaysia can be slow. Are there particular times I should avoid?
- Any suggestions for accommodation around the circuit? (I'm thinking value rather than 5 star!)
- I assume I can just buy a ticket at the circuit on Saturday. Any tips?

Thanks in advance.