It will be the time of your life!!!! Great waves, great food, and friendly people. Take in the sights and scenery for this is truly a "magical" place. Your heading to a "busy tourist" spot. That means there will be 30 - 50 people in the water on a crowded day. If you have a car and explore...you have great waves to yourself. It's my second home and everywhere is awesome. Don't hang in Tamarindo the whole time...go across the river to Playa Grande and search other nearby waves. Witches rock is a short boat trip away. Pura Vida mate....have an Imperial for me!!!!
I just got back from staying a week in tamarindo. I stayed with two brothers that grew up there so they knew all the good spots. Tamarindo bay doesnt receive much swell and there usually a bunch of people learning out there. The tamarindo rivermouth is a good break but usually very crowded. I never surfed it cause it always looked like kook heaven. If you cross the Tamarindo rivermouth to playa grande you will first hit a spot known as casitas. This is a nice long left. If you keep heading up the beach you can find other peaks to yourself. According to my friends who grew up there, Grande is not what it was 2 years ago. They claim the sandbars to be shifting from the surplus of rain in recent years which is messing up the once perfect A frame peak. If you walk south on the beach in Tamarindo you will come around a point more exposed to swell with a bunch of reef breaks. Not too sure if youre into walking out into the break on sketch rocks, but you can get some sick barrels out there. If you keep walking south you'll end up at the playa langosta rivermouth. Its another sick spot with various peaks. Whatever is breaking best at langosta will be most likely ran by a group of about 4 or 5 local rippers. Nice guys, but they take all the waves. If you cross the langosta rivermouth and continue walking south theres more peaks that way. Don't be afraid to explore.
If you have a car there is more to explore. Avellanas rivermouth at lowtide is so sick. The rivermouth is a bit north of Lolas. Just walk up the beach you can't miss it. It peaks out on a reef and grinds all the way in, just look for the boils in the water. I caught some of the best waves of my life there. Seriously the perfection of that wave on a good swell is unreal. You think its going to close out on you but it just breaks perfect. If you walk up a little north from the Avellanas rivermouth youll come across little hawaii. Its a reef break right in front of a hotel, you cant miss it. Nice long rights over there. If you go more south than avellanas youll hit playa negra. Playa negra is good at mid to high tide. If you go to hotel playa negra you will see a reef break right out front, and a beach break to the left. If you keep walking south around the point you will come to this spot my friends call caijones. This spot was a sick reef break that was always 3 ft bigger than everywhere else and no one really surfs it. You will notice it. Just walk out in the middle where the rocks seem the most flat and paddle out! If you want to travel more, go further south to Marbella. That place is awesome and beautiful with damn good waves too. Its costa rica, theres good waves everywhere.
But really, no matter where you go WATCH YOUR STUFF! My friends told me never leave anything unattended unless you want it stolen! even hide your sandals! its best to keep as least values on you as possible. As stated before, ticos just creep through the bushes and steal stuff. My Girlfriend got her brand new Roberts white diamond jacked at playa negra the first day we got there and she hid it up in the bushes. But thankfully we were driving around the area looking for it and saw it sitting on a pool table at some restaurant down the street from Avellanas Lolas. I went wild and stole that board back. what a dumbass thief. Hes lucky he still has teeth.
Anyway I hope you have an awesome trip and let me know if you have any questions. If I don't know the answer I'll ask my friend for ya.