When it works....
It isn't bad. I see a lot of people just walk by without paying any attention. The 7DMT interactive games are annoying when you have kids holding up the line or running back and forth. The little treasure hunt in Little Mermaid can be kind of fun and doesn't clog things up. So, interactive queues are definitely a mixed bag.
I much prefer how Forbidden Journey blends the queue into the storyline.