Drains: out of sight, out of mind. Always ignored, until it’s too late and your lawn is turned into a swamp.
If your drainage has accessible inspection chambers with light-weight covers then do yourself a favour and lift them and quickly check the runs every 6 months to make sure they’re clear. If your gully tops are blocked with leaves then put some marigolds on and clean them out. It literally takes 5 minutes.
While your neighbours are spending thousands on having their drains cleared, you can spend your money on new garden furniture.