Hi sleepy,
What you can do is to buy bridal mag, in it it will have some info abt the hotels in sin and the price.
With yr budget and ideal location, shortlist some of the hotel. Give them a call and tell them yr wedding to see if they have slot for you then make appt with the hotel, go hotel viewing and get free drinks with yr hubby.
Remember to ask questions like deposit amt, monitor/projector, How long they can keep the vacancy for you, go thru the whole packages and so on.... Drop down all the notes in the package.
Discuss and compare all the hotels pro & con, then decide on which you like.
Importantly you must like the hotel 1st. Some hotels may offer alots but if you don't like the ballroom also no point too.