I got my first CPAP when my son was playing baseball 15 years ago. We went to Kansas City and I left my machine at home. Almost fell asleep a half dozen times on the way home. I’ll never sleep without one again just for that reason.
He returned in a hearse.
I had not had a pap-free evening before the time, and the horrible result reenforced my good habit. Never travel without your sweet dream machine (xpap).