The best thing on Zakynthos are the beaches, which are beautiful and especially worth a trip towards the south. Gerakas is where there are sightings of turtles. Zante town is great for an evening meal, lovely greek atmosphere and lots of shopping. We stayed in Tsilivi and were treated very well. Even the busiest of restaurants managed to accommodate 12 of us. I would recommend all of the greek dishes, especially the kleftico but this does depend on personal taste. I personally never had a bad meal. As for Laganas, which is the most popular tourist resort on Zakynthos, unless you want clubs, don't go, its very lively. Tsilivi is ideal because there are quiet areas and bars at one end and clubs and loud music at the other, all ages happy.