``It's the same country, but they're worlds apart,'' says Domenica Lalima, marketing coordinator for a New York agency called Absolute Asia. Egyptian resorts are booming on the Red Sea coast, where the sun shines year-round and the coral reefs offer spectacular scuba diving. Coastal towns like Sharm al-Sheikh and Al Ghurdaqah are isolated and easy to secure. When their security is in doubt, American travelers are well advised not to be too obviously American. No baseball caps, no white sneakers, no T shirts with American slogans. And if a stranger comes up to you on the street and asks your nationality, do what some experienced American travelers do. Say you're Canadian. People think that they like Canadians....