Hate crowds and long lines but love amusement park rides? Then the pre-season — April and May — is the place for you at Lagoon. Lagoon amusement park is now open on weekends for its 120th season. The early season is an excellent time to ride until you drop. With the exception of a few rides, like the wooden roller coaster, lines are almost always so short in the spring that patrons have to stand in line only one cycle of the ride to get on.