IMHO:
Make sure there are metal valve stems in the wheels/tires.
I don't know if CCD's come with spares, but with a single-axle get one!
Have the dealer show you how to lower & raise the awning, then you do it yourself while being watched...that's what worked for me, but I didn't figure that out until after our 1st trip!
They will go through a check list with you for all the systems.
It has been my experience that A/S will stand behind the trailer for most anything afterwards, 2 yr warranty. We've had some minor 'stuff' but have always been satisfied with their response. (The selling dealer, another dealer, & J.C. itself) I still would do a complete exterior inspection for any scratches, dings, etc. including the wrap on the bottom. Any, even minor, physical damage after you leave the lot can turn into an arduous battle.
Most of all prepare to be even more excited than you are now....ENJOY, after 9 months we're still thrilled with our newbee
.