We suggest wine bottles that are dark in color for best results. Yes, but we are limited in what we can do. The biggest problem is holding the item and not having it move during the engraving process. No, but brass name plates can be attached, or gold lettering can be put on using a hot stamping machine. Hot stamping - you run the risk of melting the vinyl.
Brass plates require a rigid cover to stay attached.
Most acrylic awards are reversed engraved from the back side. This gives a 3-D effect and enhances the appearance of the acrylic award. I took a silver plated baby cup to an engraver and the plating flaked up around the engraving. A lot of inexpensive silver plated baby gifts come from the pacific rim countries. Many of these products do not have a good quality control in the silver plating process.