We are 2 female cousins in our 50s looking to spend ~6 nights in CR in mid-August. Thinking of spending 2 nights in Arenal Volcano area (La Fortuna) and 4 in Manuel Antonio (Parador Resort possibly). What is the best way to travel SJO Airport-La Fortuna-Manuel Antonio-back to SJO? Are there easy shuttles to take or should we fly? Or, should we really think about renting a car? Once in La Fortuna, if we don't have a car, how easy will it be to get to Arenal Volcano hikes, horseback riding, zip lining, whatever from our hotel? Also, any recommendations for hotels are welcome. And finally, would you recommend these 2 destinations and time split if you had this amount of time? Or Montezuma? Thanks so much!