Congrats on getting the new tt home!!!
Not sure what all the extra keys are for. Our 32 had 4 different keys, but we have 2 entrance doors, an outdoor kitchen, and then the storage/ outdoor shower key. But now we only have 2 keys, one for the outdoor shower, and one for all the other locks.
Go find a large, vacant, open parking lot and practice backing the rig up!!! Have a spotter, even while in the parking lot. Put some cones down, or just watch the lines in the lot. Rusty mentioned a great tip.