I've never been to Gili Meno but only to Gili Trawangan. We saw a lot of turtles at Gili T. We booked our tickets on the day itself. Everything was spontaneous for us. We booked a place in Bali as our home base for a month and just book for 3 days and 2 nights for a mini vacay. But would love to visit Gili Meno one day.