Hi Guys,
the clue is in the thread title, it's an Android tablet and there is a way round it cos I've done it.
I googled the question of no auto connect and came up with this answer:
A non-root solution which is a kind of hack tech.
Reboot phone, connect to the non-Internet Wifi;
Go to Settings and create a new user;
Continue, continue, and continue until you see "Checking connection";
As soon as you see "checking connection", switch off your phone;
Switch on your phone again, you will be in "Owner" user, keep it;
Toggle Wifi, and the exclamation mark should disappear quickly
Remove that new user or just leave it there;
I don't know why, but it works...
Worked for me and auto connects whenever i get away form the Airfield wifi.
You can go back and delete the new user after it works the first time.
Alan