My eldest is (on paper!) a past buggy age and usually happy to walk/scoot so I don't need a double buggy. Sometimes I do have her in my BJCM and the baby in the carrier, but sometimes if we're walking back from the park and the baby is in the buggy my eldest likes to sit in with her.
Any experience of this? Is the buggy likely to break? (I guess the obvious answer is eventually it will if I keep doing it /when they both get heavier...but just wanted to know if there are any real life war stories ! Thanks!)