I entered this on a whim: Seven days at the Sandals Grande Antigua Resort & Spa on Alka Seltzer. Remember the plop, plop, fizz, fizz jingle? I had no idea Alka Seltzer had been around as long as it has until I read this short excerpt in Inc. Magazine. I can’t get a handle on Sandals. It’s adults only, so no children underfoot. To enter, click HERE. The deadline is February 28.