So I've been trying to book tickets for La Tomatina, I started with tomatina.es but later was told it was a scam after asking about how it asks for my passport number. Someone there also recommended latomatina.info but that also asks for my passport number, so now I'm second guessing if that was just another scammer or if the passport thing is just normal for booking the event. I just want to make sure I'm booking the correct thing. (Of note, I'll be staying in a hotel in Valencia, so if there are any options/tours with direct transportation, that would be super helpful, though not an absolute necessity.)

On another note: Is there any absolute must reason that I should purchase one of the travel packs over an individual ticket?