Where in Simpson Bay? Is it "before" the bridge from the airport side? If so, I would be leery about walking along the beach at night but, if there is ample lighting around your patio/pool area, I would feel pretty safe hanging out in the evenings. If it is the "other" side of the bridge (toward or beyond Simpson Bay Resort), I'd feel a little safer hanging out and possibly even walking on the beach at night. We stay at Flamingo and often walk the beach down to BBB and Topper's and have never had any problems (there IS a spot where you have to get off the beach and either walk through SBR or along the road before you can get back on the beach). Just be vigilant wherever you are and you should be fine.