It looks like the 2017 Royal Rumble will get the WrestleMania treatment with a full use of the stadium and one of those large sets.
The seat map published by Ticketmaster for the Rumble at the Alamodome shows that no sections are being blocked and the stage will stretch almost across the whole field. There are 21 floor sections covering the massive field along with a pretty long entrance ramp.
Tickets are still being sold, starting from $25 and all the way up to $400 while Platinum Seats are being sold for $1,200 each.
The first Rumble held at the Alamodome in 1997 drew a total of 60,477 fans and did almost half a million dollars in gate money at the time.