I think it depends on your climate. If you have really low humidity, scorching sun and high temps, they like dappled shade or indirect light. If you are in a really humid mild climate near the ocean, I would wager full sun is do-able. Costa Rica has many micro climates, so tell us more. If a tree can get more hours of good sun, it will grow faster and fruit better, but the opposite is true if it's just getting roasted and hating its life... There is a balance.
My sabara is in dappled shade and maybe gets 2-3 hours of direct over head sun in the summer. My climate is very low humidity, dry hot summer weather. It does very well.
When I trialed my jabos in full sun last year, both young and old, they all suffered immensely. I will not make that same mistake again.