In normal towing. You do not need 4x4. I have had 4x4 tow vehicles, and 4x2 tow vehicles. And in 30 years of towing. I have not needed 4x4 with the camper hooked up.
BTW. My TT is parked on a down grade, and I have to pull it out thru grass (uphill). I have NEVER been stuck on the wet grass. Don't really understand how that happens. WE camp in CG that have no pavement. Again, never been stuck.
IF you want 4x4 then get it. It is totally up to you. You are the only one you have to please. But you will more than likely. Never need it