I am in the same situation. When I got engaged and told my mom that I wanted to have DW she freaked out. She told me that its crazy to have a wedding on the beach and blah blah blah (in the country where I am from there are no destination weddings and many people have never heard of it). I knew I didn't want to have a big wedding with bunch of people who I don't even know. I truly don't want to spend my wedding day with some random guests that I see once a year. So after few weeks of thinking I told my mom that I would love for her to be there with me but if she doesn't want to then that's her choice. Many people are looking weird at me for having DW but I don't care. If they don't want to come then that's their loss.