I’m with the anti tradition and sod the family if they’re not close way.
This is a celebration to show your love and commitment to each other.
To show those close to you friends and close family if any and to share the day and your shared happiness together to them.
Ultimately the family will wish to be there. However if they know you both and respect you, then they’ll understand why they are not part of the ceremony.
Quite often, parents and family like to have a say in the whole days arrangements and mothers or mother in laws will try to ru(i)n the show.
If this is a concern, they need a stiff dressing down if they are to hope for any invite to it.
It seems like you been together long enough to know it’s the right time and you’ve got a friends group that you want to be part of a fairly intimate, therefore special day.
Keep it that way.
A simple dress, something you can wear again, something that’s you, with a little extra. Why go all lavish and never wear it again and stuff it in the loft and hidden away.
Sod the opinions of others, because if you do want others suggest, it stops being your day.
So on the note, ignore what i just said.