"Cocktail hour" without food

So we're doing a small ceremony with only immediate family and the bridal part. The rest of our 40 guests are only invited to the reception. We plan to make a big entrance because most guest will not see the ceremony. That means that we will have our reception begin 30-45mins before we actually enter and about an hour before we eat. We're doing this to ensure all guests are there when we make our entrance, including the fashionable late types. I don't want guests to be uncomfortable or bored while they wait. We plan for the bar to be open, the DJ will be playing music and of course this means they'll have time to get there sign guest book, drop of gifts, etc. Does this feel appropriate or is there something else I should provide or have going on to keep guests entertained during this time?


And as a note we can afford to add an extra small component for this first hour but having a proper hors d'oeuvre hour with servers is not in our budget