Captive newtorks abroad woes

[Dave]

·        Get a router which you can assign a MAC address, do as listed above to activate it on the network, and then have all my devices connect to this with simple WPA password (none of this portal browser bullshit, but not sure if this would allow the DNS to work), and also not sure if networks work like that??

Do you know if the network access is time limited?

It's usually something like a day, after which you need to login in again.
It would make the above option abit of an arsehole.

It is time limited, but the duration is 4 weeks, so would not be too much of an issue.