Following the Fourth of July and with Labor Day on the way, reconsider plans to schedule your event on a Monday, Tuesday or Thursday night around a long weekend. The days before, during or following a long weekend are not considered the most favorable for achieving maximum attendance at your event. People's energies and focus will be elsewhere.
Long weekends are eagerly anticipated, and plans are often made in advance. Guest may have also chosen to extend their time off so this could affect attendance at your event. The Thursday before a long weekend is usually reserved for making final preparations to get an early start on the anticipated weekend -- shopping, food preparation, cleaning, etc.
Think the evenings immediately following a long weekend will make for a great event date? Think again. People usually reserve the last evening after a long weekend for personal catch-up after being away.