I don't think you can travel without the travel authorization, because once you filled the AOS package and you leave the country, your AOS is considered abandoned.
Thanks. I called them and they told me my file has not been requested, so I should get in touch with my CIS(? what is that anyway). I think I'm just gonna wait for @ least 30 days. My only concern right now is that I filed for I-131 and I'm travelling on the 21st of December. Given that my stuff entered their system on the 2nd of November, should I just start making alternate plans?
Thanks to everyone for you your diligence in answering fellow selectees' questions .