WrestleMania 35: 5 biggest reasons Vince McMahon didn't book Dean Ambrose 

#2 The card is already stacked

WrestleMania is going to feature 15 matches this year

Another reason why Vince didn't book Ambrose for WrestleMania is that the card is already jam-packed with great matches. We are already going to witness more than 15 bouts at the grand stage (considering John Cena is also going to fight at the show), and it won't be a great choice to book more matches at the show. Ambrose is a fantastic wrestler who can lock horns at any time, but we also have to agree that it will only stretch WrestleMania's air time.

A lot of fans are already upset over the fact that this pay-per-view is going to be 6-7 hours long and if WWE books more matches, it would only add insult to injury. But is it the main reason why Ambrose isn't booked for the show? I don't have any evidence, but it could be one of them.