No OP they won’t, I’m a GP. Nobody is going to laugh at this.
They certainly should take this into account and they may or may not be able to move things around to accommodate you as best they can, but at the very least if you let them know you’re this anxious about it they can let you know exactly where you are on the list and what sort of time you’re likely to be take for surgery, and keep you specifically well informed in good time if anything changes.
I can guarantee you that not everyone on a day surgery case list is worrying to this extent about exactly where they are on the list so honestly it’s not this much of an issue for the average person exactly what time their surgery is. I’d say for the majority of people they just want it done and the main worry would be about the surgery potentially being cancelled due to over-running on other cases.
That can of course feed in to some extent as to your position on the list, but for example when I recently had to have my gallbladder removed as a day case I couldn’t have cared less whether I was first, last, whatever, as long as it finally got done (it was cancelled twice before, once due to junior doctor strikes and the second time because of overrunning of another complex case). And when I had a carpal tunnel release as a day case I also couldn’t have cared less what slot I was in, it also wouldn’t have been the end of the world for me even if it was cancelled and rescheduled, though would have been a bit annoying as I had arranged work commitments around it etc. Though in that case I wasn’t fasting as I had that one under spinal block not general anaesthetic.
Do tell them how anxious the not knowing what to expect especially time-wise and potentially not being able to eat for a prolonged period is making you.