My perspective is slightly skewed because I play three characters, but I never have trouble finding characters to play against, and there are players tagging at all hours of the day and night thanks to a diverse array of timezones. The pace varies from medium to fast, but we're extremely back-tag friendly and some of us will tag for months after the fact if you don't stop let us.

Personally, the AC isn't particularly hard so long as you can find one meaningful thread to make ten comments to. Events happen all month -- there's usually one mod event, then a variety of group posts run by players -- and open top-level prompts on those posts count towards AC requirements. The Our Flag Means Death cast has a pirate crew meeting every month, there's a fight club where people can go to beat each other up... We had an information-sharing event to unload existential burdens on our characters, followed by a muppet movie marathon and a disco birthday party.

You can find threads literally ANYWHERE about ANYTHING, everyone's excited to tag around, and we love coming up with weird ways to torment/grow our characters!!!