We've tried them both.
Neither are too time consuming. Plan for about 20 minutes per "round" of each, though this could potentially be a lot longer, especially for the Sorcerers game, if there is a line of kids at each station and you have to wait for your turn. Note that you can quit at any time.
Sorcerers is sort of neat in that you get to watch several custom-animated clips of Disney characters, but the game itself isn't that interesting to me. I suppose it's supposed to be some sort of paper-rock-scissors based game but it seemed like no matter which card we held up we always "won" each little battle. Supposedly it gets more complicated or difficult the more you play it but I lost interest long before I had finished my "mission."
The Pirates "game" is much more interesting, at least to me, because it's really just about enjoying the little details they've put into the land. It's a true scavenger hunt, and rather than watching a screen you're getting to enjoy little themed elements embedded into the land, some of them quite clever and complicated. I would recommend doing this after sunset, however, as a lot of the special effects involve special lighting which is easier to appreciate when it's dark.