I have to say this is a very fascinating period right now, we've never seen a brand new major land debut quite like this.
On one hand, you can totally commend DL for running this whole reservation/virtual queue quite well. Though at the same time, you can't ignore the big elephant in the room that a possible reason for the smoothness is they're not having to deal with massive crowds due to the majority of AP's blocked out of the park. We really don't know the true test of things until those AP'rs are let in. I'd also say whenever WDW opens, but I have a gut feeling that's gonna' be a mess no matter what due to the crowds they get, that and a much smaller park to divert said crowds.