Delayed Reception

I'm mom to the groom. My son is serving overseas. He got married last October in Japan. He and his wife visited her family in Indonesia last February where they had a church ceremony (none of our family were able to attend). They've finally received my daughter-in-law's green card and are coming to the states. We would like to throw a reception for them. Mind you this will be after their official first anniversary. We're planning a DJ, cake, but no garter/bouquet toss. Ideas on invite wording or even how to plan this?