There’s some new Amex Offers, among them some nice travel offers. You can get $50 off $250 at Westin Hotels, $100 off $500 on Aerolineas Argentinas and $150 off $500 on Celebrity Cruises. Westin Hotels & Resorts – Spend $250 or more, get $50 back (#AmexWestin) Get a 1X $50 statement credit by using your enrolled…