Communion Invitations

My two dear friends who has a son going to have their first communion next year and they want me to help them because they're are going to have a big communion party. I recommend to them to buy the communion invitations, if they're going to invite a lot of people. When my son first communion I just had his bestfriends and god parent to come because I didn't plan a big party for him. I wish my family are close by so I can have a big party for him, but the first communion start at 9am so I don't really have time to cook and prepared the food instead I had his communion lunch at cheesecake factory.