am total newbie at this - but am thinking of getting babyni by babymoov (in the baby catalogue - php) it says does as a play pen and travel cot - has anyone used one and do you think it would keep in my (then 6 month old) when we go on hols? The sides are 56cnm high which seems low if dd can push it over - any advice welcome. Really want a pop up something for her to play in