@Jackie *****
Even though there are TWO thai consulates in Lao (Savannakhet and Vientiane) they run totally different in terms of requirements for visas, etc. Vientiane requires nothing to issue tourist visas (no onward travel, no proof of funds, no hotel booking) while Savannakhet requires onward travel and proof of funds ;)
Remember, ALL thai consulates (even ones in the same country) are not the same in terms of requirements. :P