I didn't read anyone else responses, but, do what you both want, not what anyone else wants.
I personally had a huge, expensive wedding, regret every moment of it surrounded by people who are there for a meal and a drink. In hindsight, I would have had a 30-50 person event making it more intimate than a festival.
Also, words of wisdom, you can either be happy or right, not both. Choose your battles wisely my friend.
Good Luck