KNWVIKING....my understanding is that you could stay at OKW and buy the plan at WL. But whereever you buy the plan, that's the only bike/boat rental location you can use. So you would have to go to WL any time you wanted to use the plan.
Also, as for the boats....you are not allowed to dock your boat anywhere but it's home dock. So when we rented the boat from WL dock, we could not dock at the marinas at FW, GF, Poly or Contemporary. Likewise, you cannot take your boat somewhere and leave it.
There are a lot of "boating cops" out on the water to ensure the safety of everyone on the lake. They are very strict with safety rules (no problem with that!) and will also ensure that you are not taking your boat to the wrong dock. Every resort has its own color of life jackets, so it's easy for them to tell where you're from.