i saw plenty of marriages in my base church / spiritual home and they were not stressful.
this included one 'remarriage' of a couple who had already had a civil marriage (catholic+orthodox; now orthodox+orthodox).
the secret seems to be:
cheap budget (ask people to bring food)
invite everyone you know (no stress at leaving anyone out)
and have at least 4 official photographers.
our friends were poor (as was i at my protestant wedding) so some friends bought flowers for the church, others did the food, others hired a nice wedding car (ok, it was the upper end of 'budget' cars, not a vintage car with driver), and others did the photos / video; all as wedding presents.
the highlight of the wedding was the service in church and the joy of everyone as the couple grew deeper into their relationship with God.
the most stressful civil weddings i have seen involved masses of expense, so if you cut that out, it will help!