My biggest hassle so far is people checking in early and taking the wrong room (twin instead of double) in a fully booked hotel.
Yes, things like that happen to me too, and that’s when the group leader has to assert their authority, and order the miscreants to change rooms (try telling the two single guys in the group that they have to share a double bed
).
It’s NOT easy leading a group on the camino. You have to check, check and double check again, every step of the way.
One place took my booking for 12 people, but didn’t want a deposit. I insisted, in order to hold the booking. They refused, assuring me that they “were never full” at that time of the year. I checked again before we left home, no problem. Yeah, you can guess what happened, they were “fully booked” when we arrived. I was furious. And the guy on the desk was the same guy I had continually checked in with. He couldn’t care less.
My co-leader (it really helps to have one!) was meanwhile phoning around and found us a budget hotel with enough beds 3kms further, which turned out to be a better option anyway. But the members of that group have never let me forget the day they arrived exhausted and had to walk further . . .