Some of the videos on Youtube from Feb/Mar show the pools with plenty of open chairs, a non-crowded pool, etc. However, this is during a cooler period at WDW, and with park capacity looking to go up in June, you can anticipate the resort pools also getting a bit more crowded. Probably not pre-COVID crowded, but more than in the first quarter of 2021.
We were there the week after Easter. Wait list started just after 11am each day. Not sure how long the process was "up". Likely until after pool party. By june maybe capacity will be eased....or ask when you check in