Mid July is a very popular time for tourists to visit Oaxaca - mainly for Guelaguetza parades…read more(desfiles, calendas, and convites), music/dance performances, and specialized festivals - with the two Mondays on the Hill being the biggest draw. Many nearby towns also have their own events and celebrations. The main auditorium features morning and afternoon shows each of the two main Mondays. For those who want to watch for free, come EARLY and line up and WAIT to get in. You can often get a great seat! The multi-group dance shows go for about 4 hours each - with pre-event bands playing for about 2 hours prior to the main event. To get in requires passing through an airport style security check - where water is taken away and empty bottles are not allowed. This mainly just protects the concession owner(s) selling things inside. There are also vendors selling food and other items outside. The Sunday night before the first main Monday shows features a (free) performance of the famous local legend about (Zapotec Princess) Donaji. The auditorium can probably hold around 1,500 people? For those not able to get a paid or free ticket, wanting to watch dance shows, the baseball stadium can hold more people and doesn't charge for the shows by the "teachers". There are also many similar performances at the various festivals, in the city's plazas and almost nightly parades. Almost all events mentioned randomly throw various small gifts into the crowd - and many people also often offer free shots of of Mezcal.