Welcome back, Mr. Priority!

About the heat, hope the tropical weather doesn't last too long. My overall experience is that extreme heat makes it more difficult to fall asleep to say the least. If you can, be sure to open the windows before bedtime to allow for some cooler air (hopefully?). When it comes to wbtb in very hot weather if you are flexible with the time, try to schedule your wbtb approximately when it's the coolest time of the night so falling asleep would be easier. Splashing cold water on one's face or arms can be relieving and it can bring about extra wakefulness so that's also something to consider trying.