Out of the 11 Southeast Asian countries, Cambodia, Indonesia, Laos, Thailand and Timor-Leste offer a visa on arrival. And with their e-visa facility, it is pretty easy to acquire a visa for Vietnam, Malaysia, Myanmar and Singapore. You have to apply for the Brunei and Philippines visa at the embassy, but the process is fast and easy. Though a Schengen visa can give you access to 26 European countries, the process is often daunting considering the amount of time and paperwork involved.
3. You can be a slow traveller in Southeast Asia without feeling guilty about it