If I understand you correctly, you're concerned about where or how you could get have the wedding. Depending on where you live, that's the easy part. You could have a civil marriage, perhaps being married by a judge. (If you're not a Witness, you can NOT be married at the Kingdom Hall.)
What you really need to worry about, though, is what your life will be like AFTER you're married. That's the really hard part if you marry a Witness.