Again, I had the roux n y. Did you have this surgery or another? Liquids were not a problem for me. I kept cold water available all of the time. Drink the protein shakes as directed. First I used the Isopure clear protein drinks. The grape tastes pretty good, kind of like grape children's Tylenol (if you can stomach that taste). The orange was also okay. I did not really care for the apple/green one. They are a little pricey, but worth it in the beginning so you don't have to concentrate on mixing. They are best served cold/refrigerated.
When you can go onto the other protein drinks (like NOT clear ones) try the Six Star cookies and cream. I lived for a while on the Body Fortress vanilla protein drinks. I would ALWAYS BEFORE THE SURGERY chose chocolate over vanilla, BUT I LEARNED WITH PROTEIN SHAKES TO USE THE VANILLA!!!! VANILLA OR COOKIES AND CREAM TASTES MUCH BETTER!!!! The chocolates taste ... well, very artificial to me. Again, the cookies and cream is closest to anything chocolate like. Drink them while you can. I found that after a while I wound up with a bit of "food aversion" toward the vanilla that initally had tasted better. Sip your water, as they say, all day. I was able to drink around meals, but they tell you not to do it so just do as the doctors say for best results.
Once I was able to eat more solids I lived on the Dannon light yogurt, Fage greek yogurt (which I drizzles a little honey with even though that was a "no no", and cottage cheese (which I did not like but kept me full). This lasted for a while; I seem to recall up to a few months. String cheese also became my friend once I could eat more solids. The Stater Brothers brand (it is a grocery store out here ... I am not sure if you have them there now; I grew up back east and do not recall them there) is good. String cheese, when you can eat it, tastes like "a lobster dinner" after all the other "mush". LOL
I hope you are doing well. I did not have a drain except when they pulled out the drain that was in for the gall bladder removal. It felt a whole lot better after that was removed, but they removed it after three days. I really felt quite well then without any pain. I wish you the best. The surgery was the best thing I could have done. I still have more to lose, after a year, but I have been sabotauging myself. I am 186 pounds at 5 feet 4 inches. I do work out, but I eat things I should not. I am off of work this summer, so I am back on the plan. Stick to the doctor's plan and DO NOT DEVIATE!!!!! Embrace the weight loss as it comes. And walk when they tell you to. It doesn't have to be a marathon, but just calmly do it. I hated walking and exercising. Now I am about one hour a day (30 mins. on the elliptical and 30 minutes on the cross trainer OR until I reach 600 calories). It took me a while to do this. I still don't like working out, but once I am at the gym I will do it. I sold the eliptical I bought for home because I wouldn't use it at home. All I do is think to myself, "Get to the gym." If I just get there, then I will work out. I also just joined a Zumba class. Substituting exercise for the want of food (after a year) really helps.
Good luck!!!! I hope you are feeling well! Ask me any question you want. My Facebook page is Maureen Moctezuma in San Dimas California. There are some before and after pictures there.