We’re not there yet but are soon to be in a similar situation. I’ve got a second hand double pram I picked up on eBay in the garage just in case my son won’t go for the buggy board. I don’t drive so we walk a lot!
I have A double pram for my nearly 3 year old and 12 month old. Don’t really like the buggy board with that nightmare manoeuvrability! He usually walks but loves the novelty of a pram now to sit in with his brother from time to time. Great for beach days or longer days out and when toddler not in it, it’s great for bags! We have the out and about double got it off marketplace for a bargain!
They are definitely handy for long walks and holidays, but don’t buy a new one as you might get 6-9 months out of it