installation

Don't chastise me as I'm late to the game but I've had my 2021 Telly for over a year now and I'm learning about the nav/software updates. I've successfully downloaded it and it's ready to install. Can I leave the vehicle in accessory mode during the install, or should the engine actually be...

I'm moving later this month and was looking to get a tow / hitch installed for a U-Haul small trailer. I'm not savvy enough to install it myself, so I'd like to ask: would it be worth it to have U-Haul install it for $400 (parts + labor) or should I go the dealership route for the tow package...