Based on the tweet "Happy 12th birthday to my Neopet! #retro\nHappy 75th birthday, Harrison Ford! #legendary\nHappy 80th birthday, Krispy Kreme! #delicious", categorize the level of joy felt by the author. Select from the following: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.