Hello pianojazz,
I am one of the Hilton brides. My wedding was over & I had to said it was really a successfully dinner. Personally I would prefer hilton compare to hyatt. The reason is bcox of the food. Went to Hyatt for dinner b4, the food doesnt taste that good as compare to hilton. It really have to depend on individual & see which point is the most concern for u. Food or decoration?
My answer to your below questions:-
1) Hilton is a 5 star hotel.
2) Deposit have to depend..not sure whether they change any policy.
3) U can try to negociate for 2 nights provided it is not a peak period.
4)You can negociate with the banquet manager during the meet up with her. They are all very nice & friendly pple!