Good morning, I can answer some of your questions from my experience but as far as I can tell each of us have fairly unique experiences. Nothing is "standard". I was banded on 8/3/10 and can say that of all the medication that the OCC gave to me, I did not have to take anything for the pain. I returned to the hotel the evening I had had surgery and walked about 2 miles upon my return. The next day I was strolling through Revolutionary avenue shopping for about 4 hours. A little discomfort but no pain. The only issue I had was bending forward to do things like tying my left shoe, I felt the port at that time. But that lasted only 3 - 4 days.
Everyones weight loss journey again is unique. I have been losing steadily since surgery, about 1/2 to a 1 lb every day.
They tell you that you can expect to get a fill 6 to 8 weeks after surgery. The fill center I will be going to says that when you stop losing 2 lbs a week, then it is time for a fill. Costs vary all over the board for fills, the best bet is to call around your area and find out what each one charges.
Hope some of this helps