hi rally,
i thought of a few things to negotiate...
one is what jazz mentioned, asked for the full course of the food tasting for 10 ppl (if u have many ppl going). i think since going for food tasting, might as well go for the full course mah.
if the package is only one nite day in hotel, can ask for two nites stay loh... usually the wedding nite is very tiring calculating the ang pow... if u have a 2nd day, at least dun need to stress stress wake up, can still enjoy the facilities of the hotel.
request for day rooms to be arranged for helpers so that they dun need to squeeze with the couple in the suite... thus allow the couple to rest more comfortably.
beer... can negotiate for a bigger barrel if you want.
anniversary dinner.... i think they do cater for this in some packages... a nice thing to have, see if ur fren wants it.
more wedding cards.... they give u a certain % of the tables u confirmed. prob have to negotiate for more if inviting a lot of friends instead of families. must be careful becos if u dun negotiate more outfront, they may not set aside enough for ur fren....
that's all i can think of at the moment....