Of course it depends on what you're doing and what kind of accommodation you're staying in, but in general I would plan for US $50 per day for all expenses (activities, transport, accom etc.). Some days you'll be hard pressed to spend more than $30, especially in Laos as it's quite a bit cheaper than the other two.
Hope that helps!
Pearse 7 months ago
It all comes down to what level of luxury you like to live in. If you take the budget option, in Vietnam at least, you can get by on $5-10 USD per day for accommodation, $5USD for transport and $5-10USD on street food and cheap eats. Alcohol is pretty cheap as is entry to museums and other sights but if you choose to go on a tour, you'll find that your money won't go as far.
Take a look at this website which should give you a general guide based on each city/region you're travelling to: www.expatistan.com
Enjoy :) 7 months ago
I think you should specify your question. In general, the expense for types of services in all the three countries is quite cheap. If staying at hotels of big cities in Vietnam such as HCMC or Hanoi, the price is approximately $20 USD. The cost of street food is just about one dollar. 5 months ago