Drop your MUST do : La Fortuna--> Samara--> Tamarindo

Hello! Going on a honeymoon with my fiance in December. We have finally figured it out and are going to La Fortuna, Samara, Tamarindo. I have done extensive research using this r/. Thank you all for the wonderful ideas.

I was hoping everyone could drop your MUST do. So far we have ziplining,hanging bridges, tamarindo party bus.

Trying to figure out: best place for snorkeling (is it worth it?), white water rafting, best place for hot springs, hikes.

Also would love any recommendations for where to stay in Samara. Thanks in advance!