D.W.
Have you tried calling Riley (guessing you got them at the gift shop) to see what they recommend? Or, have you tried calling the manufacturer of the bracelets to see what recommendations they have?
My guess is that they may have a list of standard engravers or may have services to which you can send the bracelets for the proper engraving.
I'd also check at one of the malls locally - not sure if they still have the Things Remembered kiosk at Castleton to see if they can do it since engraving is a major part of their business (or any Trophy/Engraving store for that matter)