Braintree officials said the new Captain Petersen Splash Pad has been so successful that parking around the lot has become a problem. “I feel bad for the neighbors,” Town Councilor Leland Dingee said at a council meeting Tuesday. “People are turning around in their driveways and parking on their side of the road.” To ease congestion, officials are encouraging people to park at Smith’s Beach, a 3-minute walk from the park. The walkways connecting the beach to the splash pad have been cleared and widened for children and their parents. “There’s plenty of parking, clean restrooms that are only open an hour before and hour after high tide when lifeguards are there, and there is a great walking trail from Smith’s Beach to Watson Park,” Dingee said. The splash pad will be open from 10 a.m. to 7 p.m. daily until Labor Day.