Congratulations! Such fun.
Not to be a downer... but don't let the highs get too high or the lows get too low. Be prepared for just about any thing on a first trip like this. Understand that TTs that leave the factory don't always leave perfectly assembled nor perfectly checked for issues.
You'd think the dealer will go over your RV and fix everything before you arrive - just like if you were buying a new car. Sadly, 99% of dealers will not only not go over your TT but even if they see an issue, they may not fix it if you don't notice it and make them fix it right then.
The equally sad, but true reality is that YOU are the final quality control officer for your TT.
It's your responsibility to check the operation of every little and large system to insure it's working and operating properly. The is called the PDI - the Pre-Delivery Inspection - and if you search online you'll find LOTS of info about what you need to do. Most importantly, you need to do this review of all systems BEFORE you sign on the dotted line. And, when you find problems you need to make - as in MAKE! - the dealer fix things right now, not later or you will not be finalizing the delivery of your new travel trailer.
Sorry, to be such a downer. RVing is great fun. But dealers are known to try to avoid doing anywork to get your money. And, most of us here will tell you, "if the salesman's lips are moving he is lying to you."
Once you make it past the PDI, and get your TT out camping don't be surprised to find other problems you missed during the PDI. Just plan in advance to get the RV back to the selling dealer immediately after your trip with your list of must have repairs done. This may again be something you have to force the dealer to take care of right away. Not letting them give you a month long wait to get around to your needs.
Best of LUCK. Do some research on the PDI process right away to be prepared.
Here's a video I found that has some of this info: