@bo_srwa_w_fnila: How does joining a public event work? (Source)
DeeJ: To join a public event, all you have to do is get within range, and open fire. No lobbies. No loading screens. The frontier is open, and filled with encounters you can join, or skip right past, on your way to something youve deemed momentarily more important.
@LazySigh: Will there be PvP? (Source)
DeeJ: Yup! Were already thumping each others skulls in studio-wide playtests, battling other Guardians for glory, bragging rights, and rewards. All the gear you earn in competitive multiplayer can be taken into other modes, too (and vice versa)!
@jaydawg6958: I like to play games solo often. How much can I do alone? (Source)
DeeJ: Ah, the proverbial Lone Wolf. You can experience Destinys story as a party of one, assuming youre that much of a badass. Destiny will never require you to team up with other people in campaign missions. Youll see other players along the way, but you can choose to ignore them. That said, we think youll find that playing with other Guardians is quick, painless, and a ton of fun. Its always your choice, though.