Appearance-led dentistry is the first thing people give up on when the clinic is far away, because almost all of it involves more than one visit. Whitening is a fitting and then a review. Veneers are a consultation, a design, a preparation and a fit. Bonding is quick, but matching it well often means coming back to adjust the shade in daylight rather than under a surgery lamp.
From Premtala none of that is a burden, which makes it worth doing properly rather than quickly. Design before preparation is the order that matters: the shape and shade are decided and shown to you first, and only then is any enamel touched. Enamel does not grow back, and a veneer prepared before the design was agreed is a decision you cannot revisit.
Whitening is also worth doing before anything permanent. Bleach lightens natural teeth but does nothing to existing crowns or white fillings, so whitening first and matching afterwards is the order that avoids a mismatched front tooth.