Santo Public Transport

Hi all

We are headed to Santo - Lonnoc Beach and P Orly early Jan. LP says there are daily minibuses to Port Orly.

Can anyone tell us how often daily and if they run on Sundays as we are thinking of coming back from Port Orly on a Sunday if possible. Whats the latest in the day one can expect to leave from either Luganville or Orly and make the whole trip?? Approx Cost??

Many thanks!!