I think if
Genie+ is in place by then and you don't mind buying it, you will be fine even if it is still crowded. The ability to only book a ride once per day is annoying, and it sure isn't as good as maxpass, but at least it is something. What made our trip kind of miserable was the lack of any type of fast pass, and the stressful boarding group process. We have been to both WDW and DLR during busy times, and with fast pass it was still possible to get a lot done and navigate around some of the excessively long lines and crowds. Last week we just felt trapped, and we are still sitting around sad because of all the things we usually do (sometimes more than once) that we didn't have time to do on this trip. We really feel like we missed out and paid way too much for the experience we got. The one saving factor is that we got to experience Oogie Boogie Bash which we loved.