Allow Hotspot Users to work across mutiple hotspot servers.

We have a router that is configured for two hotspot zones / servers. In both cases we use an external ASP login page to process the login.

Zone / Server 1, is for the hotel rooms, where the guest signs in using room number and surname.
Zone / Server 2, is for a beach club, where they use a fixed user account, where the password is changed daily.

The users have different profiles for speed allowances etc.

I have split the hotspots as the beach club user can only login in the beach club, not the rooms.

The problem I have is I want a user who signs in at the rooms, his connection should remain live when he goes to the beach club. Currently he must sign-in again, even though he is using the same room number and surname to login.

I thought if I used cookies or MAC Cookies, it might allow him to reconnect without needing to sign in again, but that does not appear to be the case.

Can anyone suggest where I am going wrong with this, how can I get Single Sign On that works in the two zones, for the room sign ins, and just beach club access for users who sign in with the free beach club ID.