It's just like Rockin' Rio. I actually sprayed Rio on one arm and Luxe on the other and I can't distinguish them. The only difference, and it is minor, is that Live Luxe's dry down is a tad (just a tad) more chemically than Rockin' Rio's.
A confirmation letter is a correspondence sent to confirm details, like oral agreements, appointments, and job interviews. The letter can also confirm a reservation, a response to an invitation, receipt of a various items or services, or travel arrangements.
Recommendation letters are usually specifically requested to be written about someone, and are therefore addressed to a particular requester (such as a new employer, university admissions officer, etc.), although they may also be issued to the person being recommended without specifying an addressee.