We've done both resorts in the last 10 months so my mind is still clear on most details.
Pools: Poly wins hands down, second only to the BC/YC mini water park masquerading as a pool, LOL.
Restaurants: GF has more choices by far even though Poly has one of the best food courts on property and as well is open 24/7. Poly also allows you to order the 'Ohana meal via room service.
Theming: Poly. It even smells like you're in the seven seas. Unfortunately, GF, looks like what it is (even though it 's done well) a copy of Victorian houses.
Staff: The staff at Poly is generally quite friendly however GF staff is more efficient.
Landscaping: Both equally beautiful in their own style.
Noise level: Poly is noiser by the Lava Pool pretty much until the smaller children go to sleep. The noise does not seem to travel to the longhouses though. The sounds of dragging metal chairs is noticeable at GF near the marina when people jockey for seats to watch the MK fireworks. The sound dies down fast.
CL: Sad to say it's a waste of money at Poly. Same food is served frequently and the lounge needs to be expanded. Now GF has some of the best lounge food on property IMO. Varied menus and service is frequent. My only bugaboo is the liqueurs and brandy are not self serve and since we were not on the same floor as the lounge it required a lot of up and down the elevator to get re-fills which was probably the point of having staff pour
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If you are up to it, a split stay will give you the best of the 2 worlds
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