check bag 15 kg, that's not the story of the opening post. There it was carry on and 5 kg over 25. I'm not on drugs, I read your post. You don't seem to remember what you wrote there, and you reply offensively to people who do. Are you on drugs yourself?
Most countries do not require you to apply from a specific country if you're just getting a tourist visa. But some do. It's hard to advise if we don't know what country your plan to visit.
although I don't agree that calling may yield wrong answers so regularly that it isn't worth the effort, it does appear that you've gotten a wrong answer here. With non-O, proof of onward travel is not required.