NellieK - Thank you for taking the trouble to give your feelings about the show - it's great to hear about everything, including the hiccups that happen in pretty much every preview while everyone's settling into the production. It doesn't mar my enjoyment at all, and I will be going to see the show.
I'll just take it as it is on the night and enjoy what comes up. There's nothing like live theatre, especially with a new production and being able to see J and hear his great voice.
You don't have to sing full pelt to hold an audience, but you do need to sing with truth, which J certainly does in the very few recordings I've heard of him singing solo. Josh as an adult wouldn't be singing like Alfie Boe anyway, he'd be singing like Josh the child he really is. And it sounds to me like Jay's got that absolutely right.
Critics always nitpick, they're just jobbing hacks and it's their job. For me they carry no more weight than Len looking at the feet and not being able to see them....
As for spoilers, if I'm not interested in something I scroll on by. Like I turn the TV off at any sniff of Trump.