I have noticed a lot of questions lately regarding guests not attending shows.
Tip #1. When placing grandstands make sure you have only 1 width of path between the grandstand and the show tank. This allows your zoo guests to use the grandstands.
Tip #2. Use only 1 with of path so guests are not seated too far away from the show and are able to view the show from the stands.
Tip #3. Watching shows makes guests tired, thirsty, hungry and use a bathroom so make sure you have a bathrom and a restaurant fairly close to the show exhibit so these needs can be taken care of.
Tip #4 Try not to repeat tricks in shows
If anyone else has any other useful grandstand tips please feel free to post them here.