It doens't delay anything though. The band will go on at the same time regardless

Opening acts give better value for money for your ticket imo. You may get one you like or one you discover some good songs from. Unless the lack of a support act means a longer main act then normal, which isn't the case, I can't see why not having one is a good thing.

Stadium shows used to have amazing support. Band's like Nickelback, The Feeling, Biffy Clyro, Manic Street Preachers, One republic all essentially for free on top of the bon Jovi set.

I’m confident that when I saw Bon Jovi without an opening act, their set started about 30 minutes earlier than expected.

What time will Bon Jovi go on in Vegas Saturday? Ticket time is 730pm. Thanks!