If the ticket actually says Dallas - it would be wise to plan on DALLAS. HOWEVER, it is most certainly remembered that when announced it was stated AA Center in Arlington, Texas. Must assume when the announcement was made, the announcer was NO TEXAN! A number of miles are paved between DALLAS and ARLINGTON.
I never heard the rally was to be held anywhere but Dallas.
Whoever reported Arlington got it wrong.
My info came from the Trump Campaign.