There is waiver of corkage for all hard liquor, duty paid. And Waiver for 1 bottle of wine per table if I remember correctly.
As for beer, you can get up to 60L or 30L + 13 bottles of wine.
There is not much to bargain for, esp in 5 stars hotel and above.
However, they may accomodate you in other areas if the hotel allows and depending on the season.
The contract itself is quite good enough in my opinion
For eg, I believe I got double nights in the Bridal Suite because my AD is on a Sunday and Monday usually is an off peak season.
And it is in October, Nov or Dec where it is peak season already.
So DarkWing, have you decided? Coming to the end of the year already. Better confirm soon.
For me, I was apprehensive to confirm so soon at first, but once I paid the 5k deposit, I just felt so relieved and relax knowing I have booked a great date for my AD.