We used to go in at 10am when they opened, I'd feed Emma in the dark in their party room, bring packed snack and lunch and get her to sleep in the dark party room in her pram and then for her second nap and his only one, bundle them up in snowsuits and sleeping bags and cart them off home in the -10 or -12 conditions LOL!
Very lucky with the prices here, one of the many reasons I stayed in PL - lots of things child related are dirt cheap - soft play, the zoo, kiddy museums etc. Full price for stay as long as you like weekdays is 5 euro. I was getting in for 2 euro! At home a single fare on a bus or tram costs me that and the soft play per child is around 8-10 euro and its limited to 90-120 minutes!
S x