Pop doesn't have a bell service like the moderate and deluxe resorts. They have what is called "luggage assistance" but I believe the hours are somewhat limited. I was able to borrow a cart from luggage assistance to cart our stuff to our room. (I think I left a credit card impression or signed something that said I understood the cart was worth a million dollars so I'd bring it right back.) I borrowed it to lug one of the DIS refrigerators from a fellow Diser's room to my room.
If you really don't want to haul your luggage, it seems like you could store your bags with luggage assistance and ask that they deliver them to your room the next day. I've never asked for that, but it seems like a reasonable request.
Have a nice stay at Pop. It's one of our favorite resorts.
Edited to add: Whoops, I just noticed that you've stayed at Pop before, so you probably knew all that. Oh, well. Maybe someone else will benefit.