We have a cat. 11 booked but my neice may want to tag along. That means 2 -40 year old adults and 2- girls age 11. I know that the spilt bathroomis a plus however the difference between the cat. is over 400.00. Will we be crowded in an cat. 11?This is the Western intineray. Please if anyone can has been in both catergories I would really appreicate some input.