If you plan to get something you can drive on the sand, I would recommend the 4runner or Tacoma (I've had both and they work great) over the Rav4. The Rav4 just doesn't have enough power for off-road use. Sure you may be able to take it to a few spots in the sand, however, for example, if you are somewhere in cape hatteras (like RAMP 38 which is treacherous this year) you have an increased chance of getting stuck. It can be a difficult decision, sacrificing power for fuel efficiency, when you are driving on a highway, but when you are stuck in the sand, its probably the easiest decision one could ever make.