I just got back on Monday 9/7. We were at BCV 8/30 - 9/2, BWV 9/2 - 9/4 and AK Jambo 9/4 - 9/6.
The positives -
The crowds were very light at all 3 resorts and the pools were very enjoyable. The parks were great on the week days and you were pretty much able to walk on everything FOP 10mins, got ROR both times we went to HS, Mickey RARW was the longest all week with an actual wait time of about 40 min. You could tell the parks were significantly busier on the weekends when you don't have any FP's. We drove so used our car for most of our transportation. We did take the bus to MK and back from BCV one day. The buses were also very empty and easy to use if you didn't mind waiting for the bus.
The negatives -
It was sad not having the parks open later to go in the evening and not being able to park hop to Epcot from BCV and BWV. The food was also challenging. BC market place was closed and they didn't offer drink refills at the temporary location in the solarium. AK Jambo had none of their regular restaurants open. They did open of the pool bar for labor day weekend because they were fully booked, but said they would close it again after labor day. The food options were also very limited at the places that were open. The pool at Kidani was crazy packed and actually reached capacity on Saturday and Sunday that weekend so we didn't spend much time there even though they had the few food options.
The heat over labor day weekend was crazy too so we spent the majority of those days at the pool to be mask free. 99 degrees with a feels like 110 actually feels pretty good when you take your mask off after walking around the parks in that heat.
We did have another trip scheduled in October before our season passes expire, but have decided to cancel it. It was definitely worth going once during this time for us to experience the lower crowds, but unless they open up park hours later and allow park hopping, it wasn't worth paying for the rooms again as things stand now.