How many servings of a crepe would fit for 25 people?

It depends on the size of the crepe and the appetite of the people. Typically, a crepe is considered a single serving. However, if the crepes are small, you may need to serve two or three per person. If the crepes are large, one per person may be sufficient. As a general rule of thumb, plan on about 1.5 crepes per person. This will allow for some people to have seconds and will also ensure that you have enough crepes in case some people want more than one. So, for 25 people, you would need about 38 crepes.