Older DC has been invited a party, I've asked the mum if she'd mind me bringing my other DC too who is 8 months. I explained they'll be in the sling, won't be joining in activity or have food, they'll literally just walk around with me. I'll also pay for their entry too (if there's a charge).
The mum hasn't replied and the party is soon - would it be unreasonable to bring 8 month old with me?