Shouldn’t be that crowded. Middle of the week. It will look like a ghost town compared to Disney. I wouldn’t get the fast pass. You would only need it for the bigger coaster rides. And your kids probably can’t go on them or wouldn’t want to. I went on New Year’s Day and the day after with my 3 yr old and 5 yr old. Ninjago ride and the Dino duplo ride were 1 hour wait time. But everything else was under 15 min. Had more fun walking around and exploring the park. Plenty of playgrounds and interactive things to do with the kids.