Follow those instructions on the web browser on a computer, tablet, or phone.
You can't just log in via the Roku, since it has no web browser. These instructions will use that DIRECT-Roku connection to route your web session through the Roku to establish the Roku's connection to the RV Park's net.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X