I know everyone will have a different opinion and each and every child is different and would cope differently but I'm after some opinions on how much is 'acceptable' for extra curricular activities / hobbies / sports for kids of different ages.

DD1 - 5yrs old:
School (foundation / prep) 5 days a week 9:00 - 3:30
Gymnastics - Wed 4:00 - 5:00pm
Swimming - Thurs - 5:00 - 5:30pm (just re-enrolled after first term gap to adjust to school)
Auskick - Sat 9:00 - 10:00am (starts her first one this week)

I don't doubt DD will cope, she loves her sports and she's quite good at Gymnastics and swimming, I'm hoping the 5pm lesson wont be too much for her though and it will be a matter of wait and see.
Once she progresses in gymnastics her coach has discussed the option of her training 2 nights a week but that wont be for a while (I hope)

DD2- 4yrs old:
Kinder 3 days a week - Mon & Thurs 9:15 - 2:45 and Tues 8:30 - 12:30
Swimming - Wed - 9:30 - 10:00am
Gymnastics - Wed - 12:30 - 1:30pm

She wanted to do Auskick also but I've told her she's too young and to wait until next year, I don't doubt she would cope but I think it will be nice for DD1 to have something of her own to do this year as a 'big girl'

I'm sure there are kids out there the same age who do a lot more or even a lot less... just looking for opinions.