Hmmm, lets see. What "annoyances" might you expect?
Unfortunately, the 'accepted standard' in the RV industry is to expect problems. Wish I could tell you what they'll be, but they're as individual to each RV as finger prints. Some get lucky and will find a few loose screws, others will have a wall separate from the roof. While most won't be as severe as the latter, I'll bet my pension that you will have something go wrong. The best advice is to document everything with your dealer as soon as it becomes apparent to you, and remember, this is fun!
In all seriousness. Best of luck with the new rig. May yours be one of those with only a few screws loose, somewhat like many of the regulars on this forum.