I also received a written response from Aramark, posted below.
July 26, 2012
We apologize for the less than positive experience you had at Citizens Bank Park last week. We appreciate your feedback and look forward to making the next Celiac Awareness Night a great event for everyone. By taking the time to speak with us on how to improve on the past, present and future, we now have the knowledge and tools necessary to further enhance our everyday gluten free offerings and guest experience.
Supporting our customers with dietary needs and restrictions is important to us and we will do our best to make sure that the 2013 event is memorable for all of the right reasons.
Kevin Tedesco & Jeremy Campbell
Aramark - Citizens Bank Park