I think that open ended invitations leave too much room for cancellation / a poor experience. But, perhaps other people might feel this is not an issue. Any feedback?
Depends on the activity. For example, I'm working on my novel at the coffeeshop. That is a good open ended activity. If no one shows up while I work on my novel, well that's fine, because I still got some work done.
But running around the lake is not an open ended activity, because I don't want to wait around for people to show up.
Also add a button, "Leaving for the activity now", or "I'm here at X" would be helpful.
