As Easter and summer vacation approach, here are my secrets about do's at Mykonos.
It is an island with plenty of positive energy and many things to do during the day and night.
Beaches: Agios Sostis and Panormos if you want a boem style. Agios Sostis is a very large beach were you can spend half of your day relaxing and enjoying the sun and the sea. You will find no umbrellas or sun beds, neither a beach bar but you will meet the most loyal beach crowd on the island. This beautiful beach offers not only peace and quiet but a very good small restaurant. Panormos is a remote area reacheable only by private vehicle or taxi. There you can find one of the coziest and most relaxed all-day haunts in Mykonos.
Restaurants: Appalooza bar restaurant in Mykonos town: Mexican food from organic salads to nachos -burritos, indonesian noodles and chicken wings are only some of the delicious dishes that can accompany your sangria or margarita.
Alemagou: Ftelia beach. Dishes:well loved Greek recipes. Coctails: unique. Music: selection of mainstream and classic hits.
Sea Satin Market: Located directly under the famous Mykonos windmills. One of the best fish restaurants in town. 

Tip :Secure a table and stay looooong..
Shopping: Ever lasting bracelets bought by Agios Sostis. Make sure you meet the guy who sells these bracelets on your way to the beach( walking distance). Sarrongs and scarves right away from India (you can find them in town).
Nightlife: Astra: a classic place for drinks and fun and the hottest music in town.