I'm planning a weeklong visit in August, and have been looking at the various self-drive packages. Unless you are doing a full circle tour (which sounds too rushed), the suggested routes for 7 days don't take you as far east as Jokulsarlon, and I would really like to go there. This seems to imply that there is not enough to see or do on the south coast for a week. Could that possibly be true? Would it just be better to book a car and accommodation separately?