Dear brother Assalamu Alaikum, you are choosing to travel in a group instead of traveling in a group alone. This is a good thing because traveling alone doesn't have the same fun as a group. Besides, traveling in a group also reduces the cost as the cost is shared. You mentioned some of your favorite places like Cox's Bazar, Kuakata and Sylhet. Yes these places are really great. I visited Cox's Bazar and Sylhet and enjoyed its beauty. The ones that drew me in so much that I'm eager to go again. I also want to go to Kuakata. Your post is awesome. Good luck to you.