Portable theme park returns for second round of fun in Santa Maria KSBY and last updated 2021-07-08 16:49:52-04 A theme park is now open for the second time in a row this month in Santa Maria. Helm and Sons Amusements Inc. has brought "The Greatest Portable Theme Parkâ to the Santa Maria Fairpark. It first opened for four days last week and is open again Thursday, July 8, through Sunday, July 11. The Fairpark says the response to the theme park last week and weekend was âoverwhelming.â General admission tickets to the park include entry, live entertainment, unlimited carnival rides and more. Theme park hours are from 2 p.m. to 10 p.m.