A:AnswerYou don't have to, but I would it would be a hastle to disconnect each time I wanted to move it and personally I would wary about my HDMI getting loose and not working, mine is sensitive about plugin and being plugged in to power.
A:AnswerI have Sling as my TV for cable. Disney did not continue subscriptions with DishTV and Sling. Now they have so you should be able to get Disney+ again. I wasn’t able to get ESPN because of the non-continuance.