Bowling Invitations. 8 Invitations and 8 envelopes. Whether you have your Bowling Party at the local bowling alley or have it at home with your video game system, youĂre sure to ˘STRIKE÷ up some fun with this Bowling party theme. Gatefold Style. Front: You're Invited. Inside has spaces for the guest of honor, date, place, time and to RSVP. Approximately 4.5in x 6in.