I think you mean the Pennsylvania Welcome Center in Milford,PA.
I have stayed there often with no problem. I think the signs say
no overnight truck parking. The attendant won't say OK but he won't
say no either !! Make sure to check out the 700# black bear at the
welcome center....no he's not alive !!
Another place close by is Promised Lake State Park if you want to spend
about $30. It is open year round. At exit 26. Very quite.
Mike
1999 Lance 1030
2006 F350 SRW 6.0L