Although they were only over long enough to go through the first two rooms, they truly didn't want to stop playing.
My father-in-law only need them watched for a short time and when he showed up there was a resounding "awww man!!!...". :D
When we started I just layed the dice out on the table and the character sheets. The nephew dug through them tossing aside all the humans. LOL! He wound up picking Eberk. My daughter chose Mialee, and we suggested for my niece to play Lidda (because Lidda looks like a little girl).
The first treasure chest was found, with the Baron's ring in it. They didn't find the trap on it though, so "Lidda" sprung it by opening the chest. I rolled randomly on the trap chart and it came up to be a stink trap. Everyone made their fortitude save so I told them it smelled like bad gas.
All 3 kids, as if on cue, put their shirts up to cover their noses.
So I mentioned to my nephew; "ask your mother if it would be alright to come back over this weekend and we can play some more". I also showed him how the dungeon sets up for this.