we are going to Sulawesi in august. We will arrive to Makassar at 8.00 pm. We would like to take direct sleeping bus to Rantepao. The problem is that we don't know how could we book bus tickets in advance? Before going to sulewesi we will visit Sumatra (Bukit Lawang). Do You think that it will be possible to book tickets for this bus in Sumatra? what are the other options? We would also like to book a room in Rantepao bu we are not sure how to do it in best way (we are afraid of overbooking). We would like to stay in Pias Poppies Hotel. Please give us some advice.