Always get a written contract that includes all the details of the wedding catering service as well as the menu. This is important should there ever be a problem with the service plus it helps to ensure that details are not forgotten or misunderstood in verbal communication.
When looking for wedding catering services, there are several key things to talk to them about, of course. One that you may want to make sure of is that you mention if they are a licensed catering in your state. If there is an accident and they are not, you could be liable for it.