Ahhh, I saw this thread title and came to watch the flame wars only to find everyone being all civil answering a real question.
The convenience and accessibility of that coffee machine in the concierge lounge makes the up charge to concierge worth it to me. My wife and I have enjoyed booking a cabana but I think we are going to skip that for our upcoming christmas sailing. As mentioned most of the other onboard amenities are available to anyone if you can get your booking made in time. Either way it's a
Disney cruise so of course it will be awesome.