Why should I buy my Legoland california Tickets online?

Hello Guys, Recently I have been planning for a trip to Legoland California, but little bit confused in booking the tickets. One of my friends has booked his ticket from online through purchasetours.com and he suggest me that is the most convenient way to get your tickets, it’s fast, easy & secure, Your personal information will be safe. Is it safe to get it form online or by any other source? Please reply.