My kids have begged me to get tix to Olivia Rodrigo. I've never tried to buy tickets for a big gig before, any tips to help me make them happy girls?

I haven't bought tickets for a gig at anything bigger than a students' union since AC/DC at the NEC in 1991. I've signed up for the early bird sale, is there anything else I need to know about how to give myself the best chance? She's playing the O2 for a few nights next year.