On Sunday Nov. 14, I plan on taking a bus from Valparaiso to Mendoza during the day. I've seen on Andesmar website that there's a bus that departs at 8am (though it's operate by El Rapido according to the forums?). I know there's a couple other bus companies as well like Pullman and Tur Bus. Do these companies also go to Mendoza direct from Valparaiso.
How soon in advance should I book this ticket? I'll be starting my trip in Santiago and taking a bus to Valparaiso from there. I know there's buses departing all the time so I'm not worried about that bus ticket but how easy will it be to get a direct ticket from Valparaiso to Mendoza?
What's the best way to buy a ticket and how soon should I buy it?