I am 64 and don't have as hard of an erection as I used to. We are planning a 10 day cruise in February with two other couples about our age. We plan to do some trading of spouses while on the cruise. Nobody knows us and if they did notice our activities, who cares. I want to be able to "hold up" my end so-to-speak and not disappoint anyone. I am firm enough for intercourse with my wife but soften as soon as I cum. Has anyone had any experience with viagra or any of the other sex enhancing drugs? What is best? Does the erection really last a long time? Ejaculation more intense, etc. This should be a great time and I want to do the best I can for the ladies. Thanks for any advice you may have.