Veranda’s are great if you have one big enough.
What you are looking for is even lighting on the whole family.
Don’t have people looking into bright sun as this will cause them to squint and blink.
Smaller groups can be shot inside in front of the Xmas tree or fireplace.
If park , river or beach is an easy walk that maybe an option. But if your family want a quick shoot, keep it within the grounds of the house.