I'm 33 weeks and work as a nurse. With my last child I worked 2 jobs one being fast food. Of your body can handle it, give it a try. It's better than being stressed over money.
I'm 26 weeks also and I stand on my feet for nine hours at work but I get an hour break so its OK just as long you get a break to sit down. So I say take the job.
You could always quit if you don't like it or if it gets to hard on you if it's something you want to try.
I worked in a busy fast food restaurant until I was 37 weeks, standing 10& a half hours a day. if you're comfortable I'd say take it! Especially if you're having financial problems, could put your mind at ease & help your boredom! Plus, it means new friends. I'd say go for it