Join Date: Jun 2005
Location: Charlotte, NC, USA | CLT, formerly LHR & AMS (with just a bit of PSP)
Programs: BAEC Gold, Hilton Diamond, BonVoy Titanium, (soon former) Caesars7*, (former) Wynn Black, HR "Icon"
Posts: 8,172
As LOCommish says, by itself not much of an impact.
But, if you have multiple (active) lines of credit, it can help to correlate you story when you reach out to a new casino.
Recently had that situation. Received an email many months earlier from a property I had not been to in years. Was in Vegas, replied to the email on a whim. Host reached out to me, re-opened my credit line and offered some nice comps prior to a visit.
Did the credit line make it happen by itself? Absolutely not. But, when a host tries to get you to "stop over" and wants to offer "things," it is rather effective when they can say... "I got you approved for $xxxx," come by and try things out.
Of course, my caveat, is that casino credit can be "very dangerous" in Vegas; more so than in any other gaming venue.