Debating switching my 5C cabin on Fantasy to a 4 cabin. Is the extra space necessary with a family of 4? 2 adults, 7 year old and 4 year old. Worth the extra cost too? Or is 4E cabin a better choice to get the bigger balcony. Our last cruise was on Allure where we had connecting balcony cabins so we have been spoiled. Any advice would be appreciated. Thanks.