Magic bands: Actually have no problem with the concept and appreciate not having to bring a card to the pool, and told them so. I have no experience with using them, so couldn't comment on that.
FP+: I had to choose between RnRC and TSMM while making my selections. While TSMM is the smarter choice for FP+, having a FP+ for RnRC right before leaving the park (a tradition) will make the majority of our group happier. I explained that I was disappointed that I even had to choose, and suggested they increase HS to at least 2 headliners, and giving the option for both to be on the same ride if that's how I'd prefer to use them. Same for Epcot. And it's not FP+ per se that I don't like, it's the rules and limitations, and these can be improved upon.
With things as they stand right now, and knowing what my boys like to ride and how often, FP+ is a downgrade to me. It doesn't need to be, and with enough guest feedback saying the same things, there's a good chance that the situation will improve before I start planning a future trip.
Dining cancellations: I brought this up too, as I'd decided to cancel my arrival night ADR - can't take the chance my flight will be delayed. I also cancelled a couple of in-park ADR's because weather was going to play an important part of my day-to-day planning. I suggested they change it to a "no-show" penalty; as long as you notify the restaurant you won't be there, they can give the tables to someone else.
MDE: Where to begin? Does this sound familiar?
change time
select all
next
blank screen (I'm on a mac, I suspect this is where Donald duck pops up)
back
change time
select all
next
blank screen
back
repeat 10X
yeah! I can pick a time!
next
blank screen
back
blank screen
back
change time
select all
next
blank screen
back
repeat 6 times
return to beginning
And this is for every ride, every day, just to schedule the times I want.