Can't successfully connect to Marriott Hotels as repeater

stayed at marriot this weekend. horrible results.
ar750 ver 3.1
let’s see where do I start. first I logged in with laptop wifi adapter to hotel wifi to activate captive portal access (name/room number)
I found the default gateway of 172.20.1.1 and the name with …traceroute 8.8.8.8 --resolve-hostname… and added hostname as above.
then I cloned macaddress of laptop wifi to gli-net mac wan and stopped using laptop wifi adatper completely. since I used 2.4ghz on laptop was using 2.4 ghz antenna for ar750. I disabled all ap for 2.4 ghz and 5ghz on ar750 and used ethernet for client device.

I disabled rebind
used default dns settings, enabled stubby, then tried with dnscrypt proxy

tried this

and made it perm in rc.local

then i had enough and gave up and plugged the usb150 into the router and tried it all over with that device. which failed also.

then I decided to use the mac of one of their acess points. still nothing.

after what felt like hours of reboots and modifications and repeat modifications… I gave up