The basic content is acceptable, but there are a number of big grammatical errors that will really hurt your score. For example, in the first sentence, you wrote, "... has lot of flaws in it." The correct way to state this is "a lot," but even this is a colloquialism that I'd imagine both the human and e-rater graders will frown upon. I'd suggest, "...has a number of significant flaws, which seriously weaken the argument," or something like that.
The use of "a" and "the" is virtually nonexistent. Learn how to use these (they are called indefinite and definite articles, respectively) before you sit for the GMAT if you intend to get a decent AWA score, or verbal for that matter.
The last sentence in the third paragraph has lacks a necessary connector ("and/or"), and "less entrance fee" conveys a poor grasp of the English language. A better way to write this sentence is, "Residents of that area may be more interested in local food and moderate rides, with a lower entrance fee."
Connectors need more variety. That is, rather than writing, One assumption..., another assumption..., another assumption..., consider something like, The first problem with this argument is..., Another problem is..., Finally, ....
I am pretty sure 2 sentence paragraphs are going to be a problem as well. Consider making paragraphs longer by further developing your points.
Keep practicing, and make sure to apply the sentence correction skills to your own writing as well. Consider reading well-respected newspapers such as NY Times or WSJ for examples of good grammar. I say well-respected because often smaller local newspapers cut corners on proofreading and some poor grammar is often evident, making this unacceptable to study for someone trying to learn English.