Attending Moshes

I'm super new to being a pup. Only a month or so in. My closest kennel club I could find is about two and a half hours away from me and they do pup nights once a month. I want to attend one day but I'm nervous and don't know what to expect for my first time. My owner also isn't as into pup play as I am and he works a lot so I may not be able to go with him. None of my friends and family know I'm a pup and I'm not ready to tell them that. So I have a few questions I'm hoping some more experienced pups would be able to answer for me. 

1. I am owned but am I allowed to attend moshes without my owner?
2. What should I expect?
3. What was it like at your first mosh?
4. Is there anything I should watch out for?
5. What should I bring with me? (I don't want to overpack or underpack supplies and whatnot)

Thanks. Wruff!