Travelling on guaguas and busses with heavy luggage.

A moto concho will take from Sosua to the beach.  Most of them know enough english to know what you want.  Don't worry about your baggage.  I've seen them carry 4 people plus a baby.  if they can transport 20' bundles of rebar,  washing machines etc,  they can carry you!  Can't help with Santigo, sorry.  The moto maybe 200- 250 pesos.  I don't know the going rate.   Guaguas are so packed that they might tie the bags on the roof or just say no go.  However you get there, have fun & enjoy the people & the country.

From the airport you need a taxi to either Metro Bus or Caribe Tours Bus.   From Santiago either will take you to Sosua. From Sosua a "guagua" might be a van or a car.  YES you can buy 2 seats easily!  Good idea for your bags.  It should not be more then  100RD from Sosua to Cabarete by gua gua. 

Kite Beach - most in the area will know it as Kite Beach.  No worry!  And welcome to the forums!!!

Awesome, thanks so much to both of you

You are very welcome.

Sounds like a great adventure.  Good luck and enjoy

Bob K

Update: for what it's worth I thought I'd share my experience.  When I arrived at the airport in Santiago I couldn't find a single taxi driver willing to take me into Santiago for less than USD $20 .. is this normal?  I even walked out to the main road to avoid the airport taxis and $20 was still the best price I could get.  Rather than take the overpriced taxi to a bus station and take a bus to a guagua to a motoconcho, I decided to just get a cab (it was raining and I had two massive bags) and I ended up splitting a taxi with some people all the way to Cabarete for $50 for me (not sure how much they paid).

Thanks for the update!

Thanks for the update.  Yes the $20 fare to the city is normal and the cab you took to Cabarete is also normal as the trip is usually$100 so if you split it with someone then $50 is correct.

Hope you had a good vacation

Bob K