He seemed to be talking a lot about beer for the night before with an early wakeup for duty(unless I misread).
Always a good idea to show up quite early for a new situation/location. 45 minutes seems short even if you are familiar with a place.
Repeatedly have to go to the washroom, headache, no breakfast, feel drained......should you be calling in sick. Just because you are at the aircraft doesn't mean you can't. What does this company typically do if this sort of thing happens?