As of pre Galaxy's Edge opening the show is very easy to watch as it is on a big stage right at the front of the chinese theater and is open to everyone, even passers-by (it is not your typical Disney show where you have to wait to enter a theater). I've walked towards the stage a few minutes before the show starts and was still able to watch it multiple times. If you want to make sure you get a good view you can always get there earlier, as they have little questions on the screens to entertain guests while they wait. In terms of logistics it is similar to the castle show at MK where you can walk by last minute and it is standing room only.