Hi,
Having 25 tables in Raffles Ballroom is quite comfortable, in fact you can even squeeze up to 26 tables.
Actually you can just purchase the wine from RH as and when your guests need them. This way, you don't have to worry about having sufficient wine, and don't have to bother with corkage waiver. The wine from RH is quite good.
Don't worry, RH is very professional. My coordinator used to be Sharul, but he left the hotel just a few days before my wedding. My wedding was very well handed over to Hon, who took care of all the details and everything turned out great!
Hence, although some may find RH's prices steep, etc, but you are paying for a level of professionalism unsurpassed by other hotels. It buys you a peace of mind, allowing you to just enjoy and soak in the atmosphere of your big day.