in my home town some hotels you have to be 21 and some are 18 just depends I assume

They would be responsible if anything happened to you on their premises.

i personally have stayed at a hotel alone and i'm only 16

It's usually 18 but call them to clarify that

It's either 18 or 19 and I think it might be 19 in some parts of the states, not entirely sure. Definitely one of those.

My girlfriend booked a hotel she's 17 and when we arrived they said "He should've booked here, simply because you're underage and he's not" and that was in spain where as most people know is actually not strict. I'd advise ringing the company and asking the minimum age of a person to book a room.

It's 18 around my area.

Breweerr wrote

Evans1892 wrote You have to be 18 that is policy. Mainly for safe guarding and insurance reasons.

So yeah same still applies, if you don't mind me asking how are you getting there by your self at 15? And how long has the trip been a "plan"

probably a go train or a bus lol or just my parents its like an hour away and even if i cant stay at a hotel ill stay at a friends house and like for 36 hours lol