I have a hard time sleeping all the time, but it is worse when I travel. A friend of mine suggested a white noise machine, but I use a fan at home, so I bought a small portable fan and take it when we go on car trips. Just the fan noise keeps me from being disturbed by all the other hotel noises.
However, not much I can do about the uncomfortable beds. If anyone has a solution for that, besides choice of hotel, I'd love to hear it!
Just came across your post, and it struck home with me. My husband and I also have very different sleeping patterns. He was in the Army for several years, so he can sleep through just about anything. Doesn't matter if the TV is on, lights are on, etc.
On the other hand, like you, I have to have darkness. And, I run a fan for white noise because sounds at night tend to wake me up. And, if he turns on a light for any reason I wake right up.
Have you talked to your wife about your concerns?
One thing you might try is going to bed at different times. Have her hit the sack earlier. Then, when she falls asleep to the TV you can just come in and turn it off before YOU go to bed.
I have to wonder if she's getting a restful sleep when she's falling asleep to the TV, though. Maybe see if she can talk to her doctor about it and see a sleep specialist who can give her some tricks that will help her kick the TV habit.
Maybe others will have ideas for you as well. I hope you can come to a compromise at least and both get a good nights' sleep.