Normally, fireworks are only on the weekends (Fri, Sat, and Sun) during the non-peak periods (April has both Spring Break and non-peak periods in it). However, they're slated to debut a new shows on April 13th, so it's hard to say at this point what the schedule will be like. The entertainment schedule begins to show up 45 days in advance (subject to change), so we should know more in a few weeks.