I am feeling very overwhelmed by all the wonderful places to see in Costa Rica and the need to drive precarious roads to get there. I have a family of 10-12 seeking to spend a week or 10 days. We love the idea of a trip with beach, wildlife, jungle and thermal springs. I am seeking any suggestions to narrow down to two areas of Costa Rica that are most unique to the country and hopefully not too difficult to travel between. Or one spot that has the most to offer. Also accommodations that are best for 10-12 adults (two couples and our adult children some of whom do not want to share a bed) without spending a fortune. Also how to travel with such a large group, I'd hate to rent multiple vehicles.