Sodan check your PM.
The SMRT leasing is geared to win and you to lose in most cases meaning it's not really for the inexperienced retailer.
The same goes for the shop cart trolleys, your market research must be very solid and detailed. You cannot just think wow, that place is really heavy traffic, as really heavy traffic is no good unless you are able to capture them, so a more detailed survey is needed on the people passing through any MRT station. They all have there own variables to look at.
We deal with commercial rent, and space organisers on a daily basis, and have learnt by experience to negotiate on our own terms and not theirs. A win win relationship is needed not a win lose.
If you want to submit a tender, then you will have to do your maths on sound experience, otherwise you will lose the opportunity, or lose your money, getting it right will be through experience.
My suggestion would be to avoid it, if it's your first retail business, there are plenty of good locations around and alternative retail concepts, that can increase your retail revenue, though your product range may also be a deciding factor.
If you want to contact the lease holders, just leave your business card or details and ask the cashier to pass it to the business owner, requesting a time to arrange a business meeting.
Those that are losing money will be more than happy to sublet if they can. though they will increase the monthly rent, to cut their losses.
