I'm planning to take a vacation next month. Since I started planning for it, my parents have continually expressed doubt and concern and generally interfered in the plans. They want to know where and with whom I'm staying, and recently have even begin pressing me for contact information and other details. (Though I'm a legal adult, housing costs in my country make it unfeasible to move out on my own without being married. As a result, I still live with my parents.)
The truth is that I'm going to a pony convention with a friend from America. Though I haven't met them in person yet and though they're reluctant to share their real-life information (and even more reluctant to get involved with my parents), I've known them for a few years and I trust them. At the insistence of my parents that I spend more time abroad than just the convention, I've also planned to stay with another American friend for about a week. (I'm also planning to engage in activities of an adult nature with my friends while I'm there.)
In previous attempts to appease my parents, I've told them that I'm going to the convention in order to showcase things of a technical nature, and that I'll be sharing a room with project staff. This worked fairly well initially, but they've become increasingly agitated lately and have even begun expressing a desire to go along with me. I fear that that won't end well, or will at least ruin my enjoyment of the trip. How do I reassure them and convince them that I'm perfectly capable of handling myself and should be left alone?
Some extra details: I'm male, 21, living in an Asian country. I'm attending university and have a part-time job, which nets me enough for me to save up for personal things, but I still live with my parents and by extension their food and lodging. My culture is "traditional", to the extent of being ignorant of homosexuality and (at best) thinking transsexuality is strange. As for my relationship with my parents, I mainly want to avoid conflict. I feel like deception is preferable. At the very least, they can't find out about what I get up to with my (also male) friends.
Is your relationship strong enough for you to maintain it through an act of independence?
It should be, but they're very concerned about safety.