We're a very laid back type group. We are a gaming community that has at least a hundred players spread across multiple games (probably more, but I don't have source information to get an exact number). In our SWTOR branch, we have around 20 active players, most of whom have multiple alts.
We do have a schedule and it is, in fact, loose. On Friday evenings, we usually run some group content - either group PvP in one of the brackets or we end up running dailies and Flash Points. On Sunday around 6 PM EST, we tend to run some Op. Additionally, when we get 8+ members on Saturday evenings we tend to form an op and run something, even if it is just something easy for alts.