Can trucks stay there

Yes

Yes they allow a few to stay in the far back corner of the lot. As long as there isn't any inconvience or something that becomes a lengthy stay. There is also a truck stop within 10miles.. Not far at all

I've seen some parked there before.

I haven't seen any overnight.

Yes denfinitly 24 hour walmarts better

For a few not overnight

Yes.. Have seen few couple of times