Josephine, your invitations are GORGEOUS!!!! I really love them!
VERY good idea to spell out the details in multiple locations about the group reservation. I would just caution you to make sure everyone understands all this if you are trying to achieve a certain number of booked rooms. We only have our immediate family attending and the smallest amount of rooms we could guarantee for a group rate was 5. We checked with everyone to make sure they were definitely coming, explained why were needed this commitment before we signed the group agreement, and confirmed we had 6 rooms. I wasn't totally sure about the 6th one so I made a group agreement for 5. After spelling this all out on our website and in multiple emails, my fiance's sister went and booked with her travel agent AND took their mother's room and booked it on her reservation too. So we lost TWO rooms and dropped under our group agreement. I was really freaking out and she was soooo difficult to work with to get it resolved. It ended up, after days of arguing with her, that she cut 3 days off their reservations (that's what our group ressie was for) and booked through my travel agent. She just kept insisting our travel agent was trying to rip her off and that was just so not the case. So it is worked out now but it was a very long, stressful week of worry, phone calls, emails, and nastiness!!