Hello, we go to Costa Rica early september. We want to see turtles, but we wonder if one place is "better" than the other to see the turtles: Tortuguero or Ostional? I've heard an excursion in Tortuguero is more expensive than in Ostional? We want to go to Tortuguero anyway, but skip the turtle watching there and do that at Ostional. Would this be a good idea?