Is belmont park worth it?

Hi everyone, I'm planning my Fiancé's (22f) first trip to CA/the ocean. I LOVE the ocean and I'm super excited to bring her there. Anyways our hotel is in Tustin. We will only be there 3.5 days, June 2nd-5th. One of the days I'm planning to do a day trip to San Diego to go to belmont park and La Jolla. She doesn't love rides, she'll ride them but not her thing. She loves arcades. Is the arcade + La Jolla worth the driving and stress or should I plan to go somewhere else? We're coming from MN so if anyone could compare belmont to valleyfair that'd be helpful.

Also one of the days we're going to catalina if anyone has recommendations for things to do there as well.

Thank you!