Composite veneers before a wedding trip

My wedding is in April and I’m considering Composite Veneer in Turkey during a short trip in February. I know this is cosmetic and I don’t want to rush, but the local prices here are high and I’m trying to be realistic. One clinic says they can do consultation and treatment in 2 days, another says better to allow 4 days because of bite check and possible adjustments. I prefer the honest-sounding answer, but taking extra days off work is hard. Has anyone done composite work and felt they had enough time for small corrections before flying back? Also, how did you explain the shade you wanted without ending up too white? I don’t want a dramatic influencer smile, just tidy for photos. I have sent pictures, but WhatsApp compresses everything and I’m not sure if that matters.