I went through 2 deliveries, a Challi 300 and a Sovereign.
Unlike one would think, there is PLENTY of things that are not in order when you take delivery and that someone has to recognize and have it fixed. (at least with the 2 airplanes I accepted one had 120+ snags to be reworked - the overwhelming majority paint issues, I spent a day aroind the airplane just to see/mark/write down the paint issues)
There are specialists who can do the acceptance for you - at a considerable rate, but that money is well spent. If you donīt know someone, your future mx shop might assist you as well.
And what Mike Echo said - donīt rush it at all, bring plenty of time.