Re-reading your initial question Ben, is there any reason that iPads being returned
at the end of the day are not turned off (so they don't connect to your local APs)?
Depending on your WLAN authentication scheme(s), 7372 model APs can support
up to 100 AES encrypted or 250 open auth clients, per radio. The individual WLANs
advanced options default to 100 Max Clients, as Gary mentions. If the iPads are all
auto-connecting to a client limited WLAN, they could consume these 100 per radio