When it gets hot in inland Tustin—and it gets very hot in inland Tustin in the summer—families flock to Pioneer Road Park, a developed park sandwiched between Peters Canyon Park and the 261 toll road. It's a rare space that can offer parents an entire day with the kids. Start on the half-sized basketball court or play volleyball in the fields. Younger varmints can pretend to be Roy Rogers and Dale Evans and clamber up the Old West-style covered wagons, then have a picnic lunch at the tables. The highlight in the summer is the "water-feature play area"; better known as a splash pad, it's a lot like an oversized mall fountain with low-speed water cannons that runs from 10 a.m. to 4 p.m., allowing the little ones (and parents) to cool off before heading home, plumb tuckered out.