Groupon will charge 1.8 percent for MasterCard, Visa and Discover cards, on top of a 15 cent per-swipe fee.

FORBES: This Week in Credit Card News

Then, experience what readers of Scuba Diving magazine ranked as the top spot to submerge in the Caribbean with your complimentary PADI Discover scuba diving resort course for two.

BBC: Daily deal: Scuba diving in Bonaire

If you are a Turkish foodie, Ms. Maxwell's "Top five Istanbul cooking courses and food tours" will give options to discover markets and learn to make your own meals.

BBC: This is Istanbul week