This article is from the Piano Purchase and Maintenance FAQ, by Isako Hoshino firstname.lastname@example.org with numerous contributions by others.
Before delivery, if possible, make a thorough inspection of
the piano and make note of any damages prior to delivery
(take pictures, if you can). Once the piano is delivered,
check for any visible signs of damage. If you see any, make
a note of it on the delivery receipt if you had it
professionally delivered. If you moved it yourself, well...
Once you have put your piano in a semi-permanent position,
have the piano tuned.