Thanks Dunga.

I emailed the consulit in Ciudad Del Este about requierments for a tourist visa and it seems pretty reasonable. Much better then the embassy in Bangkok anyway. This is what they told me.

Requirements:

1)  One visa application form per applicant (you get it here in the
office)
properly filled out together with the following documentation:

a) Passport with a minimum remaining validity of six months (it must
also have
at least 2 blank pages available for visa stamp);
-
b) One recent passport type photograph (3x4cm / 1”x½”) of applicant,
front
view in white background.
-
c) tickets or booking of the trip and dates or print out of the booking
with
dates;

d) cost: about US$50,00

You may stay 180 days per year as tourist