I respectfully disagree with some of the above comments. You do not need a generator yet, and you should not need to disconnect the battery at night, for such a short trip. This is a new trailer with a new battery, so it should be in good shape. Do charge it before you leave, though.
And speaking of charging, it is a very good idea to have a "battery minder" that trickle charges the battery when you are not camping. If you let the battery run down to nothing and then re-charge it before going camping, you can really shorten the life of the battery. Another lesson painfully learned.
Most critically, have fun! Boondocking and dry camping are very different from staying in an RV park. More work, more adventure, more enjoyable.