Metta,
I'm a ex-Rasa bride. I also had my dinner at Siloso ballroom. Lucky for me, all went smoothly.
For your questions:
1. Food tasting will be done ard 2 mths b4 the dinner. On that day, you will get ur invites, car passes, stickers...etc.
2. Flowers setup, march-in, coach arrangement, signing book, etc. will be discussed later, like 1 mth b4 AD.
Dun worry, ur co-ordinator will arrange to meet up with u to discuss all these. She will also give u time to think over.
Just relax and be a pretty bride!