Are you going to look the setlist or wait until you see them live at your show?
I've done this few times that went totally "blind" to the show, but it hard to keep the secret..especially if there's some playing Iron Maiden songs from some boombox before the show as they might play the setlist.
I will try and avoid the setlist, don't use Instagram, will avoid this site and block recommended videos on Youtube for a couple of weeks. Last tour I was at Zagreb on the first night but I managed to go blind into Legacy of the Beast part 1 and the Book of Souls tour as well.
Have tickets booked for end of June on this tour but hopefully if there are dates added for central/eastern europe or Greece at end of May I will get to one those first, making it a bit easier.
Imo, Judas Priest will support Maiden on the upcoming tour. Maiden supported Priest in 80's. Now will be vice versa. Future Past, for ya.
Actually think there's a chance Priest could join the Iron Maiden tour if the Ozzy Osbourne tour is cancelled. Both tours supposed to be kicking off at similar time, Priest might not have made alternate plans and will just do the circuit with Maiden???
/wishful thinking.