The context of the following conversation is Remy's kids were lonely playing by themselves, so Remy wanted Carson's kids to come play too.:
Remy says I put together a fun playdate for my kids and Carson's kids..
The friend responds Don't they have friends of their own to play with?.
Remy responds There aren't very many kids in the neighbourhood, so they're always playing along when Carson's kids aren't over..
The friend responds I hope they hit it off. Both you and Carson have great kids, so there's no reason they won't get along..