We are thinking of camping in tents South of the Drake area. What are the water conditions like to swim? boogie board?snorkel?

Depends which beach, weather conditions, and tide. We swam in mellow waters in a bay in front of Cabinas Las Caletas south of Drake and then the beach south of us around the point had much more surf/wave action.

We are planning on 4 nts.at Corcovado Adventure Tent Camp, S of Drake Bay(need to boat down from Sierpe R). But I have not heard anything positive or negative re: swimming waters. I have no idea how far apart Cabinas Las Caletas is from CATC. Just want to make sure we can cool off(in Dec) from the humidity.
By the way, did you have sand flea problems?What time of year were you there?

What other activities did you partake?

We were there in March and there was no sand fleas but the weather had been hot and dry.

What I remember of the tent camp as I strolled by is there are some small bay areas. The sandy beaches along that coast are between volcanic outcrops so be aware of the possibility of submerged sharp volcanic rock near the shore in places. You should be able to cool off at the least. There is a wide beach with surf in front of a community school toward Drake from the tent camp and then farther yet is the beach in front of the Dolphin Foundation and Cabinas Las Caletas if you can't find mellow waters for swimming near you. I doubt if you'll have a problem with that.

I enjoyed the Cano Island snorkeling tour though the coral is minimal the fish were a fun change of pace from hiking the jungle trails.

My Corcovado Tour was good at San Padrillo Station as I saw a good amount of animals. Our group was small though and the second part of the day it was me and the guide only and he brought me off trail when he heard a group of feeding spider and capuchin monkeys. There can be alot of tours/people there and at Cano Island.

I also kayaked alone from C L Caletas to the small Aguitas River by Drake Bay. The kayaking was fun and coming back against the waves wasn't bad but the river was a bit of a let down as the area there by the river mouth has a couple hotel docks and the river had more people than I wanted to share it with. I was hoping for more of a wilderness adventure with parrots etc.
Very early morning might have been better.
You will be closer to the private reserve that has good trails up into the hills out from Punta Marenco which should be good for hiking.

Have a wonderful journey!

Thanks Earthtraveler. We were going back and forth between CATC and Las Caletas in Drake Bay. Just booked at Las Caletas and sounds like just the type of rustic place for us!!

Undecided about the Corcovado Hike at San Pedrillo entrance. Some people have said there isn't real "new" vegetation or wildlife if also experiencing Bosque Del Cabo in Cabo Matapalo(south of Osa). Does anyone have any recommendations knowing we are going to BdC for 4 nights? Is the Corcovado-San Pedrillo worth going?(we are in Drake Bay 4 nights)
Thanks.

There are some forested areas in the Park that are special in the way that the large trees and understory ferns form an unusally beautiful scene being what appears untouched mature primary forest. That area was much different than other forests I've seen.

BDC is a heavily forested area with great fauna also. Not sure about the forest esthetic compared to San Padrillo but the area looked great as we drove by on the way to Carate.

Having four nights at Drake I'd go to the Park. I was happy I did even though some said the same was around the Caletas area. I thought the Park was more beautiful and much more fauna.