Answer:
1. Make a List of their Likes and Dislikes for the Surprise Birthday Party.
2. Plan Surprise Birthday Party Location.
3. Invite the family and Friends to the Surprise Birthday Party.
4. Arrange a Surprise Birthday Party Cake.
5. Plan a Lunch or Dinner Surprise Birthday Party.
6. Plan Games for the Surprise Birthday Event.
7. Pick a personalized theme. Choose a theme based on the guest of honor's favorite movies, books, or TV shows.
8. Book a surprising venue. Source: Peerspace.
9. Send out sneaky invites.
10. Have a strong alibi.
11. Add the sweet finishing touch.
12. Order catering for food and drinks.
13. Turn up the music.
14. Time to decorate.