Next to the Monster's Inc. ride. It takes place behind what is currently labeled as the End of the Line Club for the evening Electronica event.
Times are 1/2 hour after park opening for 1 1/2 hours, which usually means 10:30 AM - noon.
Usually Pluto for 1/2 hour, then Chip and Dale, then Pluto again.
Not usually crowded, although the line was 10 people deep once during spring break. Most of the times we have been though, we have simply walked up or waited for only one other family.