Welcome Sean to the forum. Great place for answers.
As stated, take your time on the PDI. After all the trailer systems have been demonstrated to you that they work, and you understand them, you can continue to look over the trailer for anything else that needs fixing. Many inform the tech that they can stay or go, but just be sure to take your time. If you take the trailer with issues, getting them corrected after the sale can be very time consuming. The dealer has no incentive to expedite anything for you at that time. Some will not sign the paperwork until PDI is over and things corrected.
There is at least one PDI Checklist in the “Documents” section of this forum. I suggest you take it with you if you don’t already have one.
Let us know how it goes. Have fun!
Steve & Sue
2017 Grand Design 297RSTS Travel Trailer
2017 Ford F-350 Lariat Crew Cab diesel 6.7 SW LB 11,500 lb GVWR package
Former: Crossroads ST26RB