could you give advise for the best possible trip in 10 days costa rica?

could you give advise for the best possible trip in 10 days costa rica?

hi, we are a couple who wants to spend 10 days in costa rica. We would like to make a combination of adventure(volcano, whale and dolphin watching, turtles to be safed,...all the other animals to see, rafting, archeologic sites,...)visit and relaxing on beautifull see coasts(beaches) can you give me some advise what are the best things to do, how long are the distances between the important places to visit, what hotels to book?in advance? in other words a proposal of a package deal...is a visa required for belgian travellers? are any specific vaccination necessary before entering costa rica and their rain forests? thank you

Question about Turtle Hatching Season in Costa Rica