People who attend Sports Things will already know this, but for those of us who are less frequent patrons...
Reminder that since many of the stadiums on the US leg are usually home to NFL games, please be sure to check their bag policies, as there have been some updates since U2's last stadium tour. Clear plastic bags, and clutch bags with size restrictions have been enforced for football games, and when I contacted the venue I'll be attending this summer they told me that policy will be in effect for U2.
I don't work for any of these places and cannot speak on their behalf, but just trying to get the word out so nobody is left in a pickle and being forced to abandon their bag. If in doubt, just ask your venue.