The summer of broken plans

I am not sure why this is, but for some reason this summer everyone makes plans with my kids and than never follow through. I actually stopped telling them what plans we had because my 3 year old would get so disappointed when the other person would not show up. It started right in the beginning of summer with someone inviting us to Longwood and the day of cancelled. Than there was the person who invited us over to swim and never followed through, which was followed by the person who asked us to meet at a park for a play date and never followed through. The final one was someone inviting us to a museum and than again NOT FOLLOWING THROUGH!!! What is the deal with people? I always try to keep my appointments in order not to disappoint the other adults children, but it seems no one has trouble disappointing my kids!! Here is the crazy thing, they were the ones inviting us! Why invite us somewhere and than not follow through? Whatever. My kids and I still have a great time together. We tend not to invite people along because I am sure they WOULD NEVER SHOW UP!!!