My family cant come to my wedding what do i do?

im getting married in august, incites have been out since janurary, im english but live in america with my fiance - we plan to get married in the usa and i thought my parents at least would make the effort to come over for my wedding but this week theyve said they cant make it, along with my cousins and my grandparents. i dont have a big family so going to england for a wedding would be stupid especially when my fiance has a huge family ..what shall i do? im devistated