Does anybody have their little ones in a mid sleeper cabin bed? We are getting one for our 4.5 year old son but our 3.5 daughter wants one too but I feel worried she might wake in the middle of night and forget she's high up and fall out! She is an 'older' 3.5 year old if that makes sense, she seems older than she is and is quite advanced for her age so sure she'll be fine? The beds are not very high but the lower ones, not sure if anyone else has these for under 5's?