Can the bottle labels be left on the rocket as long as ES can see the bottle size and that it is a carbonated beverage ? Reveal Questions The original label may remain attached to the bottle as long as all required information is visible to the event supervisor. ‹ Are the “unaltered ping pong balls” required to satisfy the ITTF regulations for ping pong balls (40 millimeter diameter, 2.7 grams)? How is an Event Supervisor to interpret the word "appropriate"? ›