Mayon Graycross:
I would like to have time to use the Pact Boon (Chain) I'm picking by the time we leave. Would it be possible for Mayon to sacrifice an hour (and ten minutes) of the long rest to ritual cast Find Familiar without taking a level of exhaustion? If not then I'll take that level anyway, I want to get my little fairy friend. :D
You can sacrifice an hour of the long rest, but then you won't be able to level up or take advantage of the long rest benefits. Or, you can always stay an hour after the long rest, but that's likely to be after noon... Or you can just cast the spell later tomorrow. =)