I've shared my story before, so I apologize to those of you who've seen it. I hope to encourage the OP.
In September 2009, I had what I learned was a gallbladder attack on a Sunday night. We had eaten at a church potluck that evening, so I thought that something just hadn't settled well with me. The pain and bloating felt like intense gas pains. By Monday evening I felt better and continued with my week. I had a second attack on the Friday of that same week. I went to a walk-in clinic and the doctor diagnosed me with a hiatial hernia. I was in pain all weekend, and from what I read online, my symptoms did not match a hernia. On Sunday, I talked with a friend who is a nurse. He said it sounded like classical gallbladder. He made a call for me Monday morning and helped me get an ultrasound that day and see the surgeon on Tuesday.
On Tuesday, September 29th, I learned that I had very large gall stones. The position of one was such that if it moved into the bile duct, I could be facing a life threatening situation. I could not postpone the surgery. I was scheduled for surgery on Wed., September 30th. Wow. I was in shock. My family was scheduled to leave for Disney on Thursday, October 1st!! I shared this with my surgeon. He was so supportive and said that if I wanted to try to go, he would support that as long as the surgery went well. I came home and made phone calls begging Delta to let me change my flight to just a couple of days later. No go. I had already packed earlier, so we were ready to go if I could.
My surgery start time was delayed because the surgery before me had complications. My surgery was a little complicated because the gallbladder was so full of stones, the surgeon got into my liver slightly getting it out. I got home about 6pm and went to bed. I slept well and woke up feeling better than I had in awhile! The pain I'd been experiencing was gone! And the surgical area was tender, but ok. WE'RE GOING TO DISNEY WORLD!!
We flew, which was good. I don't think I could've made the 10-1/2 hour drive! The first afternoon I rested and then walked from the BC to Norway to eat dinner. The next day, I stayed in the hotel room and rested while DH took the kids to the MK. By Saturday, two days post op, I spent the day in AK. It was a different kind of trip to WDW for us, because I moved more slowly. I couldn't ride roller coasters or rough, bumpy rides. We spent more time at the pool instead of going to the water parks. But it was still a great vacation!
I say all of this to say that your vacation may not have to be postponed if you have surgery. Take care of yourself, for sure. I didn't push beyond what I could handle. I spent time resting in the shade at the park while DH & the kids rode. It actually made for a more relaxing trip for us all!
Hang in there! Praying for you!