It sounds like it could just be a party, expect games, people talking and maybe some beverages. They may be a bit cliquey but if you start introducing yourself to people you may like it, they also may be a bit... cringey, if that's the case and it's not your cup of tea just leave. Furs always like new people, especially people who are from different countries, so you should be fine. Just remember that you should be in control the entire time, if they try to do something that makes you feel uncomfortable, and you say no, and they don't respect that, then they're dangerous and you should leave, even if it seems like a harmless thing. You don't want to go home regretting your night out!
My main advice, be safe, don't do anything you don't want to do and have a plan on how to get home in case you want to leave early. That said, I doubt anything bad will happen and I'm sure you'll have a fantastic time! Don't be scared, just go and have fun, I just want to make sure you're safe as well!