A four door Lariat with an Extended Cab is one big truck. Parking that Big Boy, anywhere, will be a problem.
Don't actually use it for shopping, always just stay out in the "back 40" when a run to town when camping is required.
What's really aggravating is to come out to discover some beat up POS parked so close that you can't open one side doors.
There can be 20 empty spaces in the area, and some moron decides to snuggle up to your clean rig with their dented, faded paint, unwashed accident waiting to happen.
I've helped remove a mirror or two for them, just to be helpful...