I would be at the boat dock no later than 5:15 pm. That gives you some leeway if the boat isn't there immediately. The boat ride is about 10 minutes (we just did this on Monday). If you are early, you can check in and walk around the stable, play on the playground, etc. They open the doors right at 6:15 pm. Even if you are a little late, it's ok. They serve salad and bread as soon as you're seated, but the actual show will start around 6:30 pm.