Ever notice that not as many people go to summer events as they do in the spring, fall or winter?  Well I have.  Here is my theory as to why this happens:

Too many weekend events during the summer (family, friends, vacation, etc.).  If you know you will have no free time on the weekend, you are more likely to try and free some time up during the week(s) prior to the weekend ... like week nights. 

Sound familiar?