J,
In most cases the yard will do a basic job of adjusting the
rigging when they step the mast.
If you have chance, check out their
rigging dept. You will be able to get afeel for the kind of work they do and how much you want them to do.
I don't know what your level of experience is, but you will find it a good experience to be there when they do the work so you can see what is involved and perhaps make some notes and ask questions, also take some photographs. Make sure you ask the workers permission before you go taking lots of photographs of them working. If you get some good ones share them with the yard workers or forward them to management with a complimentary note. Keeps relations where they should be.
It will also go a long way towards helping you understand your particular vessel's systems and be more effective and proactive in the management of your asset.
Congrats on the new boat! If this is the one.
Hope that helps,
John