Congrats on your new TT from a fellow Maine native! I go back every summer to my cottage in Round Pond near New Harbor and Pemaquid Point! I assume if you are picking it up now, that it was already winterized. Check that carefully when you do your walk thru inspection tmrw! MAKE SURE you have them demo everything for you ( except water systems since winterized) turn on every switch, check furnace, A/C, open every single cabinet, run fridge, microwave, TV, stereo. Now is the time if anything doesn't work to get them to fix it. Never fun to have to run back and leave it for a month for some simple fix!
Get a good cover for it! I recommend ADCO available on Amazon. Get the all weather "plus wind" with TYVEC roof for Maine climate. You will have a lot of snow and ice laying on it all winter and a cover will protect it and keep it looking new, free from sun and ice deterioration! Also, That cover comes with tire covers too! Also, make sure to put a Progressive Industries Electrical Management system on your Holiday list. It is a must have and does SO much more than a surge protector! Don't take my word for it. Look it up on Amazon and read the hundreds of positive reviews on that unit! I have a 30A portable and it saved our bacon twice in 2016 on our first uses with it!
Sleep in it a few nights before the cold gets unbearable and then cover it up for a long winter sleep! Don't worry--the cover has zippers so you can go into it in the winter and enjoy the new camper smell some more! Best Wishes!