well, it depends. Many embassies do require a real ticket + accommodation booking confirmation. Sure you can upload a dummy ticket, but your application can be rejected. The best approach is to book a fully refundable ticket or one with no penalties for date changes.
Participante anónimo 337 your passport country DOES matter. The embassy website states some countries are subject to stricter vetting and longer processing times.
I don't really recommend traveling by bus in here. Roads are dangerous, especially if a many hours journey is involved. Said so, taking a flight to a very near place, like less than one hour flight, would be better.
I wish I could be a perpetual tourist, but nah. I have to work 8 hours a day from M to F and even some weekends. Said, so I wrote "Others, remote work". And yes, I understand that some other people are on a workcation mode/freelancer mode. In my case it's just a regular full-time job for a regular company, with fixed hours, so choosing Tourism would be inaccurate at best.