We were stuck for about 30 minutes total. Maybe a bbit more. The diesel fumes coming up from Autopia were toxic, especially when they turned the air conditioning off. They seemed to have a bit of a problem getting the tow-a-rail hooked up. They were verey nice afterward and gave us 2 re-admit coupons for our trouble (each one for up to 6 people). We used them to go on Matterhorn and Alice, which had had insane lines all day. The CM at Alice gave the. Coupon back so we could use it on another ride. Probably because we were celebrating our anniversary AND my birthday. So we went on Peter Pan as welll. We had eithher done or had fast passes for most everything we wanted to do except those 3 rides, so it worked out.
The only other time I've been stuck on a ride was our honeymoon. We got stuck on Splash Mountain and had to be walked out. THAT time was actually interesting. This time was not. We couldn't see any "view", the babies were scared and crying, poor things, and the communication was late and not forthcoming. The passes were nice, but not worth the difficulty.
Still, alls well that ends well.