Our local yards really appreciate it when the owner does all the preparation for something like this.
Your spar is probably deck-stepped so is easier than ours, but there is still a lot of busy work that an owner can get out of the way before the boat is there tying up lift time (not to mention running up a higher labor bill).
If possible, bring in the boat to the yard with boom off and stowed, genny off (if RF), and some plan for dealing with all the internal wiring. If you have the wiring opened up inside, label everything.:nerd:
Mark every standing rigging thread at the point it enters the turnbuckle and label anything that might remotely be needing to be taken off the rig.
Decks cleared, running rigging off the housetop, gear stored, for yard guys to move about safely.
As the old saying might go: "been there, done that, saved enough $ to buy the T shirt!"
Cheers,
Loren