My husband and I are thinking of going to Costa Rica in July for four nights for about $3000 including flight and hotel, not any food or beverage. We are staying at a hotel that is pretty nice, in the Arenal National Park area. Is this too much? Is four nights a good amount of time? I've been to Costa Rica before to study, but years ago when I was still in college. My husband has not. Any advice would be greatly appreciated.