1. Plan your day...
... in regards to the shows you are going to see. I wouldn't say it's necessary to plan your whole trip but it is nice to know where your day is heading. In my opinion, it's best to do a quick and jam packed trip, which means back to back shows. So just have a think about what you want to see when you get up in the morning.
We saw 15 shows in three days.
That being said, if you ever have spare time it's definitely worth heading to a box office and asking what's on in the next hour and overall what they recommend.