The only one I know of is Pinkies in Faliraki so not a lot of help to you I'm afraid. Hope you have a lovely wedding.

There's Spa Lindos which does all manner of beauty treatments http://www.lindostreasures.com/spa

I'm not sure what system they use but if your nail extensions are just for the wedding and you don't intend on keeping them permanently you would be better going for gel than acrylic (Bio Sculpture or Calgel are good brands). Acrylic nails require buffing of your own nail and glue for the tips, this thins and weakens the nail so your natural nail would be damaged until it fully grows back. Find out before you go and if you can't get gels done in resort have them done at a reputable salon before you go.

yes - in Faliraki at Pinkies. Carol, the owner is English. Her phone number is: +30 6946358171 or +30 2241085691. She does Acrylic - Fibreglass and Gel Nail Extensions, waxing, facials, manicure and pedicure