For my parents' 65th bdays, my brother and I with our families are thinking of renting a house and staying a week on one of the San Juan Islands the last week in June? There will be a total of 6 adults and 4 kids (3,5,7, & 10). Which of the islands would offer us the most? What part of the island should we stay? Are the San Juan Islands better than goign to other seaside/lakeside places in Washington? We will be traveling from San Diego.