There is actually nothing that I must buy at Mega Mart. We prefer to forgo the big-box shopping experience in Mobay and head straight to Negril. After checking-in, I usually take a walk to a local market like L&M, DJ's or Wise Choice to grab some supplies. Of course, I can't stock-up in one trip but I actually enjoy making near-daily trips to the market to get what I need. (Plus I prefer to support local businesses.)