Slightly frustrated Foresquare user here. I'm a little confused about its usage and was wondering if some of the more avid users here could clarify a few things

Slightly frustrated Foresquare user here. I'm a little confused about its usage and was wondering if some of the more avid users here could clarify a few things for me. When I go to a restaurant, I have 3 separate actions that occur at 3 different times during my meal: 1 - Upon entering a restaurant, I want to "check in". 2 - When I get my meal, and it looks great, I want to post a photo. 3 - When I'm done eating, I want to leave a rating and a comment. It seems that Foresquare's check-in is a one-time only action. I can't "update" my checkin in its various stages. I don't use it as a social app as it's intended (since none of my friends use it here in Sydney). I use it as a tool to discover and rate restaurants.