Absolutely! Even if you can recall your dream easily it is still a great idea to have a DJ. What this does is create a commitment to remembering your dreams. When you are more committed, your dreams will appear more clearly and be more frequent. Additionally, it is a good way to keep track of all your dreams so if you want to look back and see any similarities or possible messages you can.
If you are worried about privacy I do believe you can purchase diaries with a lock on them so noone can read it.
The best way around this is to make sure you have a tall glass of water before you go to bed. Then in the middle of the night you can go to the bathroom and then go back to bed to try the U-WILD. This way you don’t have to wake anyone up with alarms. I naturally wake up to go to the bathroom anyway, but I know what you mean because my wife really appreciates her sleep and I’d hate to wake her up.
Hope this helps.