For the Rusty Nail tavern or any of the associated Free Seas events, come on down. We have had many people from MG and WRA since Tol Barad does not require anchoring; just come and take it in. On the discord, we have a list of suggested addons, but none are required if you want to watch and learn.
We also participate in the Night Market and the same thing. Just come and observe.
If you need tongue potions to help with cross-faction listening, I keep tons on me all the time that I am happy to give out.
When you make a TRP, use an appropriate name. You can even put that you are newer to RP in our OOC portion of the TRP, which helps others know to have extra grace. It can be intimidating but enjoyable once you get into it.