The girls' friend Ben had his (belated) birthday party at Splash Lagoon, a local indoor waterpark, and invited the girls. I came along as well to help with the kids, and everyone had a great time. It's very nice playing around in a heated waterpark and looking at the snow out the window.
The kids rode all the rides and swam in all the pools. I think the most amusing part was watching the lifeguards' confused reactions to Ben and Ana practicing their lutz lifts in the wave pool. They so obviously had no idea what to make of it!
After all the waterparking, they had ice cream and cupcakes in the room at night. A very nice and enjoyable party.