Your chances of staying in the same room are pretty good. If you do book this way, have the reservations linked with a request to keep the same room. When you check in for the first night, tell the CM you have a continuing reservation and would like to stay in the same room if possible. It's not guaranteed you won't have to move, but the CM will do everything he/she can to accommodate you

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Club level access would be available as soon as you check in (or as soon as the lounge opens if you check in before lounge hours begin), whether you book a non CL room at BWI or book a different resort

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Hope you have a great trip!
Congrats on the savings! Hope you have a great trip

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Have a great time

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I didn't care for GF SL, so my choice would be between Poly CL and WL CL. Poly is my favorite resort overall, but we also love the WL. It's been a long time since our WL CL stay, but from reports I've read the last few years, it seems to be just as great now as it was years ago (plus it's been refurbed). Good luck deciding and enjoy the planning

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