Small Cornish weddings... The cheapest way? Us and kids

Hi..



So marriage no 2 and we discussed just going and doing it with kids. Both love Cornwall although yet to go together... Did think of a gretna green wedding too but he got married there the first time and in the venue I would have chosen so...
I have found some places online and then gone into like their FB pages etc but..
Anyone know the cheapest packages for just us and (5) kids? Possibly one other adult or 2.
Which venue etc? Have mailed and messages for quotes from some that don't have obvious pricing but it's taking a while for answers for anything I ask lately what with covid...
So.. hitchers.. any ideas?