The GF pool does have a server that walks around the pool taking orders (and delivering them to you). In my estimate, the best beds on property are at the GF. It's a lot quieter and the food service at the GF doesn't seem as chaotic due to a bigger area (note, mid-July last year I waited in line for 20 minutes to place an order for a burger in the fast food area there. It was REALLY overcrowded in the little space. Of course there is outdoor seating, but mid-summer, it's not too much fun when you want to escape the heat).
If going mid-summer, the GF will be busy, but the main area is more spread out than the Poly. The Poly's pool takes up a large area.