Agree with After8 about the age of the BMC cast. When the whole cast entered for the opening number, I mistook a few of the students as being teachers. Maybe it was that it's a small theatre and we were pretty close to the front, but a few of the cast looked way too old for HS, moreso than say the cast of Dear Evan Hansen where both Connor and Zoe looked young, and Evan and Jared played young very well. Actually, when the cast came out post show, I thought George Salazar looked much younger IRL than he did onstage!
That being said, the audience when we saw it this weekend was likely 70% teens, some parents and a few older groups of folks. The kids were very well behaved and enthusiastic. Honestly, I've seen worse theatre behavior from adults at non-teen-oriented shows! The cast was energetic and the band waving to the audience just prior to the start was adorable.
I think this show will see much more of a money-making life on the college circuit (and possibly the high school circuit with a few cuts). It is very appealing to young people, and could also tour well regionally, I think. It doesn't have the emotional staying power for Bway of a DEH but it is entertaining for what it is. Will Roland has obviously been working on his voice - he has some tough notes and sings them well. And the audience loves George Salazar - his character is the one the audience roots for.
This is definitely marketed for a teen audience and it does the job well - I think it's going to have a good run on local stages once it closes off Broadway.