We do soccer on Thursday and I pick up LO 1 (3 yrs old) from preschool and take her to Lil Kickers class. The class is from 4:30-5:15 and she is usually tired and over it by 5:05 pm on the dot. I think 30 minutes is ideal for a week day but 45 minutes would be no problem on Sat....but I can't switch because that class is completely full.