FWIW, with the A/C option I am not sure it the Centurian has guest privileges ...
Probably a moot point for the OP, but for anyone else seeking an answer, yes the Centurion will allow you 2 guests, so if you have 2 people requiring access then you are in luck!
Admirals Club Locations And Pass Information
[TABLE="class: aa-tabular-simple aa-tabular-wide aa-zebra aa-no-hover line-space"]
[TR]
[TH]Customer Classification[/TH]
[TH]Number of Guests[/TH]
[/TR]
[TR="class: aa-altRow"]
[TD]Admirals Club Member[/TD]
[TD]2 Guests or immediate family*[/TD]
[/TR]
[TR]
[TD]AAirpass Member[/TD]
[TD]2 Guests or immediate family*[/TD]
[/TR]
[TR="class: aa-altRow"]
[TD]Citi Executive AAdvantage Primary cardmember[/TD]
[TD]2 Guests or immediate family*[/TD]
[/TR]
[TR]
[TD]30-Day Membership[/TD]
[TD]2 Guests or immediate family*[/TD]
[/TR]
[TR="class: aa-altRow"]
[TD]American Express Centurion and / or select Platinum** cardmember
**not all American Express Platinum cards are eligible for Club access[/TD]
[TD]2 Guests or immediate family*[/TD]
[/TR]
[TR]
[TD]AA International Premium Class,
oneworld
First and Business Class[/TD]
[TD]1 guest (First Class passengers only)[/TD]
[/TR]
[TR="class: aa-altRow"]
[TD]
oneworld Emerald and Sapphire[/TD]
[TD]1 guest[/TD]
[/TR]
[TR]
[TD]One-Day Pass, Transcontinental Premium Class, Military[/TD]
[TD]None[/TD]
[/TR]
[/TABLE]
*All guests must accompany the member. Immediate family refers to spouse, domestic partner and/or children under 18 years of age.
*Flight sold with AA flight number and flown on AA aircraft.
American Express Platinum card members must hold AA ticket valid for same-day travel to gain admission.