Hai,
We went to DLL in the last two weeks of september and the first week of october. We also didn't know what to expect. After beeing once to Bali we thought we where "indonesian" veterans. At first arrival our first impression was "how are we going to last for three weeks". But believe me till now nothing comparse to the North of Sulawesi. Diving is great and diverse. Lost to bee seen at Lembeh strait, Gritters, nudy branches, pigmea seahorses (once 8 in one dive), mandarin fish(we saw 12 in on dive), frogfishes, mimic ocotopus, and so on. At 1.5 hours to sail there is the Molukka Sea(a.k.a Celebes Sea) with unspoiled hard and soft coral, droppofs, nice currents and the big fishes. On land you can make beautifull tripps to vulcanos, local markets, Manado and so on. For us the 3 weeks were too short while there is still lots to be discovered. Also higly recommendable, beautifull and save diving, very good and fresh food, good beds and a dedicated staff. It was our first but not our last visit to DLL.