I see what you're saying, TheCaffeinator. So, typically you have one main show for a certain age group, and another show for another age group and so on...
Sort of. A more accurate way to think of it is that I have a number of acts designed to acheive certain goals, then a number of possible versions of each act designed for different ages/venues. Let's take, for example, my children's birthday show: I have a generic birthday show "narrative arc" which I use to create different birthday shows appropriate for specific age groups and venues (my in-the-home birthday show is going to be different than my on-stage-at-the-theatre birthday show).
Which brings me to another simple question:
What is the age group that you perform for, the most? As in, which age group is the most popular?
Hard to say. David Kaye (aka Silly Billy) gives the following age groupings in his book Seriously Silly:
3 - 6
7 - 9
10 - 13
In the most recent spate of birthday shows I've done, most have fallen into the 7 - 9 grouping, but overall for me there seems to be a fairly close split between 7-9 and 10-13.
Interestingly, I've received a number of recent booking inquiries for birthdya parties in the 3 - 6 age group but I haven't gotten them because my rates were too high; there was a distinct attitude among those potential clients that younger kids should get cheaper shows... one guy even said "...it shouldn't be that big a deal to just get in...do your thing...and get out...." and tried to get me to knock about $100 off my fee. Sorry...but I take my work a bit more seriously than that.
Anyway...that's a whole different topic.
One further point regarding this:
If I were to do a few shows for my local library, how would I do the same show for that someone who was in the audience watching that show?
If someone was in the audience at my school or library show and as a result hired me to do a birthday party, they would get a completely different show not because they were in the audience at the initial show but, rather, because my school/library show is a completely different act than my birthday shows, with a different structure and set of objectives -- and letting them know this would be part of the booking call. If, however, someone who was in the audience at my school or library show hired me to do a school or library show, they would get pretty much the same show, though the specifics of the booking might result in some modifications.