Originally Posted by Ceri JC
At most, I'll be able to get one full day away from the family to go riding/exploring on my own.
If you don't get the bike situated the day before and turn in it the day after, you're screwed.
You will need a full day in every sense of the word or your frustration level will be through the roof. By the time shops open/close/you do the paperwork - you've eaten most of the day right there.
Ergo, in addition to developing a plan in advance, which is good, be thinking about how to make the day work for you, and that will mean not doing any rental admin the day of the ride.