Hi all. Just booked a tour to Colombia for Dec. discovered great prices on non stop air from NYC ($500 less than tour co. offered.). Tried to boom with Avianca and clicked "pay" and then nothing! Page error message in Spanish. Called them and was told 'web site doesn't work well with a Mac. Do you have a Windows computer?" Hmmm. Hard to believe right? Anyway, wondering if others have had good/bad luck with this airline. Also comments about Colombia also appreciated. Trip covers Bogota, Medellin, coffee plantation area and Cartagena.