First Dates

So for some reason I find myself having two first dates this weekend - the reason I say "for some reason" is I'm not a big "dater". I usually hook up with a guy first and then start dating him which pretty much just negates the whole awkwardness of the first date. NO JUDGING! I'm a busy girl - I need to find out if things are going to work out physically so I don't waste any time you know? So anyways back to the point of this - the fact that I really don't want to go on one of them because it's tonight and it's Friday and it will of course be awkward and I will have wasted a perfectly good Friday night sitting in awkwardness with a relative stranger. Is there any good way to cancel a first date? Or reschedule? It's almost like rescheduling a job interview - very touchy situation....One can come of looking bad for canceling on someone the day of the meeting. Plus I think he's kind of country which is sooooo not me...when I say country I mean likes country music and might possibly line dance - I don't know - it's all speculation at this point because I met him at work (he works for a subcontractor) and I didn't get a chance to find out much before I agreed to have dinner with him. But the rumor around my jobsite is there may be some line dancing going on....I don't know if I will be able to keep a straight face when the topic comes up because it will and the reason I know it will is because I will be asking him if it's true.
I hate first dates for all their awkward, uncomfortableness...weird lapses in conversation...obligations to be on your best behavior....ughhh....so maybe my dog gets sick, or my grandma passes away, or my cat escapes or my roommates car breaks down.....
Or maybe I just go, get the free meal, and tell him I have something to do later....YES....that's it! I can eat dinner and be a t the AZ by 10:30 at the latest...now why didn't I think of that before I typed all this?