Talked to a friend who just experienced. Very nice guy. HUGE Disney fan. Got the addiction bad.
His take was there will be immense lines for this due to the small capacity plus the fact Disney is touting it as an attraction, not like getting Daisy Duck's autograph at EPCOT's entrance (BTW, I often wonder who comes up with putting characters in situations ... why Daisy and Stitch at Epcot's plaza?)
Friend opined that many folks will be grumpy to start with because they'll be baking in the sun to get in. Once in, friend was amazed by the pre-show area, compared the effects to TDS's ToT (although, to be fair and unlike this Spirit, he's never experienced that amazing experience that makes you wonder what just happened in front of you) ... ''and then you go through a door and get to see children with cardboard prance around while Belle comes in and PhotoPass CMs slink around the room ... and that's it.''
If you're a 21st century WDW guest or a Mommy to a 5-year-old girl, then you'll likely love it ... but the rest of us ... well, you know what that Jim Hill dudes says about us.