S.G.
When we do jazz in the park, we take: Simple salad (freshly cut roma tomatoes or sliced cherry tomatoes with sliced freshed mozzarella drizzled with olive oil with fresh basil); roasted red pepper hummus with either wheat flatbread or cucumbers, rotisery chicken-sliced up served on a bed of spinach/mushroom risotto, and for desert minature lemon-tarts. We drink Sparking apple juice or Sparkling pear juice.
Congrats on your day; have an enjoyable time.