[Daryles]

Normally I line everything up (hitch and pin) but don't hookup until slides retracted. That only takes a few minutes in the morning. Takes me longer to get TV/RV aligned than to retract slides, landing gear and lock in.
I'm guessing you will ok if you are within 1-2 degrees of level. If you have an RV fridge, it does not like running out of level. That's a whole other topic.
At home we have very unlevel ground.
If I stop overnight and everything is pretty level (according to the level up panel), I leave the TV/RV connected, and run the slides out/in and only connect what I need (power for AC, usually). I do NOT put the levelers down because I do not want to put unnecessary strain on the frame, the pin or the hitch. I just let it sit on the tires and the TV.