My group has been loving it, even the player who is highly critical of most WotC adventures. We started with Spelljammer Academy (I switched the big bad of Academy to be Hastain instead of Vocath) and then picked up with Light of Xaryxis. When they reached the Rock of Bral, I gave them all a giant poster map of Bral from the 2e set, and let them explore a little before going to meet up with Krux. It drove home that this was a big, new, unfamiliar place and my players had a lot of fun poring over the map and deciding where to go shopping. They also had a lot of fun interacting with Large Luigi. While I wouldn't say that we play up the silliness, we've had a more lighthearted tone than our last campaign (Rise of the Runelords converted to 5e) and my players have embraced the whimsical elements. I think it can be a lot of fun for the right group, but it's not going to appeal to everyone.