What an amazing experience! I took the 5 day/4 night Salkantay trek with Valencia Travel to get here. It was hard going at times but well worth it. At 5:20 am we got in line for the bus that takes you up to Machu Picchu. Even this early it is very busy and the line was long. There were plenty of buses and the line moved pretty quickly. The bus ride up to the Machu Picchu entrance takes about 30 minutes but then there is another line to enter with your passport and tickets ready.