I'm flying CZM-YUL-YHZ. I arrive in YUL at midnight and depart to YHZ at 7:30am.

When I check into CZM will they only check my bags to YUL and issue me a boarding pass only to YUL, forcing me to re-check into YUL that morning?

I don't want to fork out the $160 + Tax for the Marriott hotel for a 5-6hour sleep so I'm looking off site with free shuttle for $99. However if I have to check in again at YUL I'm going to have to get their earlier, etc. It would help if they'd check me in right to YHZ and I can even leave my suitcase in YUL overnight instead of lugging it.

Thanks!