sorry can't help you but we're band-buds, my surgery also is May 16th!
i just got back from BJ's today with my stock pile, here is what i've purchased so far
Progresso Light Soups
Knorr bagged dehydrated soups (low fat(
A bunch of Gatorade Zero's
Crystal Light singles
Muscle Milk Light
Smart Balance 0% milk (tastes like 2%)
skim milk powder
Jello temptations pudding
non-fat pudding cups
jello
beef/chicken broth
and a few other things but I can't recall
how many days are you going to do pre-op liquids? I begin Monday