I don't sleep very well away from home either. I usually need a night for sure, sometimes 2 to "settle in" before I can have any sort of decent sleep. We are usually tenting it, or sometimes we are lucky and can borrow the family's motorhome. I don't like taking sleeping pills or anything like that, so I usually just grab a few drinks with caffeine in them to keep me going during the day, and then catch back up on sleep once I get back home. If the show is close enough that I can drive back and forth, I do that instead. Definitely not ideal, but you do what you gotta do!
One week last year I was away for 6 days, doing a clinic and then a show, and I literally could not sleep for pretty much the whole week. It really sucked. By day 4 I'm not even sure how I was still a functioning member of society for my rides, but I managed.