Veneers can chip, crack, wear or loosen over time. The American Dental Association's veneer guide explains that these changes may require rebonding, repair or replacement. The appropriate response depends on what a dentist finds.
Ask for assessment if you notice a loose veneer, a chipped edge, roughness or a change in your bite. A photograph can help communicate a concern, but it cannot establish the cause or tell you which treatment is appropriate. Keep the original restoration and material information available for the reviewing dentist.
Future treatment should be part of the original conversation. Ask what removal would involve, what remains underneath the veneer, and how a repair differs from a replacement in your case. Do not treat an expected service life as a promise of warranty coverage.
Treatment timing is a different question
Timing depends on the examination, records, design approval, tooth preparation when needed, direct composite versus laboratory-made ceramic, temporaries when applicable, fitting, bonding, and adjustments. Ask for the appointment sequence and what must be confirmed before travel because a package duration is not a clinical guarantee.