We had a great Memorial Day. We went back to Great Falls Park in the morning for more exploring, then we played in the backyard in the afternoon. The kids love the new pool. It works so much better this year to have a little pool in the backyard because the kids can flit from pool to swings to slide to pool again with no problems. Last year it was kind of like "you're in the backyard so swim and when you're done we'll go in."
Here's a video of the kids multi-tasking in the backyard: