This is how involved that problem:
1. Leave those rooms
2. Toggle off friends icon and global feed icon for all relay nodes except the paid nodes.
Discussion
What is the "friends" icon BTW? I've been assuming it's for replies to messages.
Public chats
* Public chats :)
Thanks. I wonder if it might be useful be indicate in the relays view on Amethyst which ones are paid and which free. I think by default the paid ones are the ones with global turned on but might be helpful to have a reminder using some type of icon (like if someone changes their settings they might lose the info on which are paid).