Gigamike, just so you know re closing, while in my case I have the pool techs do it, they do NOT lower the water.
They've explained that its better (in their opinion, in my climate and pool) to leave the water level high to combat pressure from the water table. They blow out the lines, plug the returns, use a bit of antifreeze, remove the light (placed and wrapped on deck) and use a gizmo in the skimmer then cover. Since they have to warranty the work and fix it if anything goes wrong, my guess is that in my case and location leaving the water high is less risky than lowering it
In fairness, they are using a pro air compressor to blow out the lines, so they're confident when they plug em
While paying techs to close is pricy compared to DIY, it might be worth it this one time if you're new to your pool to have them close to see what the standard approach is in your area. My bet is that they may not want to lower the water at all.
Then again, its possible that my techs use this ethos on my pool because they were the company that built it and installed the sump and groundwater pump. I've heard that this company is known as "specialists" in terms of tricky water table installs.
While I am above the flood plain (on the river but up a hill) my pool sits in what was a former catch basin, very close to house and at te bottom of a staged terrace. I am told by original owner that 3 other companies said the install was impossible
