Hi Bee Bee,
Most of us here are still waiting for our big day, not too sure if those who already had their wedding at Sentosa Resort and Spa are still active in the thread.
Can't comment about the food cos I haven't tried them myself, but I have a few friends who had attended the wedding dinners there. They think the food is not bad, no unfavourable comments.
Have you paid a visit to the place? I think it has a very nice resort feel, but this is subjective. You will get a better idea of the ambience if you can drop by the place when there is a wedding going on.
Cost-wise, have to say that Sentosa Resort and Spa is one of the more expensive ones in the market. Check out their package prices on
http://www.beaufort.com.sg/rm_wedd_pk.html
And the prices do not include GST!
They have 2 ballrooms there, the smaller one can accomodate max 16 tables, the bigger one max 26 tables.
To be honest, in terms of perks and location,
Sentosa Resort and Spa is not the most economical or best. However, if you are looking for a romantic venue with an outdoor solemnization, it is certainly attractive. I would say we are paying a high price more for the ambience than anything else.
Hope these helps.