When multiple families or family members are involved, the wording can be very simple. It is acceptable to just simplify and say that “the Smith and Johnson families invite” guests to the event, especially if an event is more casual or if there are just too many people to list.
. . . . . . . . . .
The Smith family
and
the Johnson family
are honored to invite you
to celebrate the marriage of
their children
Elizabeth Anne Smith
and
Michael Steven Johnson
on Saturday, the eleventh of July
two thousand fifteen
at 11 o’clock in the morning
Immaculate Conception Church
City, State
Lunch, mingling, and merriment to follow