I honestly don't think the boys will be involved in a bunch of activities or sports once these two realize how much time and effort it takes (unless a nanny can do all the driving, which would cost a fortune). There are nights I am in my car driving kids around from 4pm-9pm or even later - my husband works late many nights. Practices alone, on the same nights (sometimes more than 1 per kid), have you running ragged. I live in my car during the evenings, because who is going to drive all the way home after drop off, just to turn around 30 min later and drive back so you can take the same kid to another activity. Sometimes you can work out a ride, but depends on if your kid is going straight home or not or whether your house is on the way for that person or not. Then if each kid is in a different activity or sport, they may have weekend games or tournaments at the same time and you each split up and drive them, or you work out a ride with a teammate's parent (but you can't do this every time or you are never there to support your own kid, as most parents want to do...).
Add to this daily school drop off and pickup (because I don't see either of their kids riding a bus), and there is no way they can have one driving parent unless they have a ton of parent pals who like them enough to constantly haul those boys around for them (like
@xmasbdaygirl said).
They will probably have to have two nannies who take their boys to all their activities while T&J are off at the parks or on vacay to "relax" because they have
two kids.