Back from my trip. Had a good time with the bands. Nothing really bad to say about it other than the FP+.
Negatives:
Can't duplicate FP+
Stuck to only 3 FP+ per day @ one park
Positives:
-Can put a credit/debit card on the band with your own custom PIN so that if you lose your band they cannot charge it.
-Had a lot of staffs who worked there told us their experiences with it, it was all positive.
-If we went swimming at the hotel resort, we didn't have to bring a key card, we just swam with our bands on and bands opened our doors.
-light, and convenient, didn't have to reach into pocket or wallet to get card out, always was on hand. so I didn't have to hold a FP ticket in line, i just had my band.
-The FP+ reservations for shows, ie, Illuminations, Wishes Fireworks, Fantasmic, the reserved seatings for the FP+ was amazing. (When I was at Wishes in DMK, we were seated on the grass at the Rose Garden near the bridge to Tomorrow land from Main street, there was about 30 people in a large grass, while everybody else stood outside and stand)
I can go on and on with the positives, I had a great time with them, other than my small negatives.
EDIT: Also, on my bands we used our "middle names" which were different from our purchase package which we used our first names... Our hotel got my middle name Kevin mixed up with my first name Txhua, and on our arrival date our bands wouldn't open the door, thankfully they still gave us the "key to the world card" which opened for us, as we went back to concierge later that evening to be easily fixed.