Probably cheaper and efficient to rent a car than wasting time bussing to Brooklyn or Monsey and then connecting to one of the multiple informal minivans that go to Monticello, Liberty et. al.
Yes Excellent bus is still running. They advertise in many Jewish weekly advertisement publications in the Catskills and in NYC. They do not have an online presence. Google them for their phone number and pretty sure they can email you the schedule or help you out.
huju knocks someone or another over the use of “busses” about every two or three years. But, in fact, the dictionary specifies that both buses and busses are acceptable and correct spellings of the same word. And, although, currently buses is by far the more common spelling, previously busses was more common as well as having been the preferred spelling of the word in Merriam-Webster’s dictionary until 1961.
Now that the form of affection thing has been cleared up, maybe huju could just say that it’s a hilchos Shabbos matter that should have nothing to do with transportation to the Catskills