Which part(s) of Croatia are you planning to visit? I can try and give you tips for visiting the places you're planning to visit, especially if you're planning to visit Zagreb.
I know it's awkward for me to be interested in a meeting considering I'm a neophyte here, but my classes don't start until the first week of October, and I can easily get a day off the first week of September, as the things currently stand. We don't know each other, but if there's some sort of a mini-meet or something, you can colour me interested.
Excusez-moi for double-posting, but the first weekend of your visit is approaching. Did you hear from anyone else? The first weekend would work better for me, however, my schedule is pretty flexible and open as the things currently stand, so 7th would work for me as well.
Did you have any plans for the weekend you're staying in Zagreb? Any places you'd like to visit, activities you'd like to do?