It's bad. We just got off the Fantasy on Saturday. At least 2 charter buses of families were taken to be quarantined for 10 days and that's just what I saw. Lots more disembarked with COVID (hadn't told Disney or did but it was the last day and Disney told them to just mask and disembark). Our FB group for the sailing has lots of people positive right now. And grumpy. 1 out of 4 of us tested positive with it the next year. For the record, we JUST had COVID in early May... we thought we'd have some more protection but with this new variant, I guess not! Our servers told us that the crew on the Fantasy was hit pretty hard recently. The server at a table near ours had "laryngitis" and then never came back... 2 stories were given to two separate families she was serving- she hurt her back and she sprained her ankle.
My 4yo got tested the night before the cruise - the CMs didn't seem to care how good of a job I did with the testing. AND, even worse, if someone in your cabin was positive, you were quarantined BUT the people you were interacting with -- like family in a different cabin -- didn't have to be tested.
Obviously we knew the risks going but dang, I feel like Disney could be more forthcoming with the positivity rate if they're noticing a spike so people can make an informed decision about what they want to do (mask, not attend certain events, etc).