Mine is in that way right now. I have winterized it and the DW cleaned out all the food from the camper. I am going to clean off the roof next weekend and bring in the slides.
The Last 2 Winters my old TT was plugged in for about half the winter. It was our guest house over Christmas. The only thing I found out that I did not like about leaving it plugged in was that the cord gets frozen to the ground.
I will probably disconnect it unless I need it for a guest house this year.
2004 Dodge Ram 2500HD Cummins
2017 Keystone Montana 3820 FK
2009 Harley Davidson Ultra Glide