Pregnant and eating from the taco guy?

My wife is 8 1/2 months pregnant and we are heading to an engagement party today. It is a little early for dinner and even if we eat before we go, I know she will need to eat before it is time to leave there. They will have a Taco Guy there and my question is if it is dangerous for her to eat from him? I know sometimes they can be kinda sketchy.. Maybe she should stick to the Carne Asada and stay away from the chicken.. or maybe just go hungry for a bit?.. I guess in the end it's always better to be safe than sorry. Not sure what to do, any advice would be helpful and appreciated. Thank You