Mable charge a reasonable fee for Greek extra and so is Alex Fjord when she comes down here. Otherwise I believe Eliza at VC also enjoy and offer it, but the location and rates makes it impractical for me
You could also try Corin (formerly of SU and VIP) who is an indy. She mentions greek in her LL ad. I've partaken in a trip to the islands with her and from my end, it was amazing.