The twosome caught up with Olivia Holt inside the park and headed off to the rides before meeting a few fans.
Bella and Tristan even shared a sweet kiss while on Grizzly River Run at California Adventure.
“Had a perfect day in disneyland with @R5band @olivia_holt @tristanklier89 @dani_thorne, our fams, @ahellerPR , laura, & disney family,” Bella tweeted.
Olivia added, “Workin with @bellathorne at disneyland! love her!”
20+ pics inside…