Not sure why you're only interested in the Martini bar... but looking at the current Reflection menu it has Ritual Margarita $8 and Zero Gimlet $8 non-alcoholic drinks listed.
The Mast bar lists zero proof Heineken 0.0 $9, Cranberry Mule $6, Peach Sangria $6, Sparkling Mint Lemonade $6, Raspberry Fizz $6, and Watermelon Tropic $6. I like the non-alcoholic frozen daiquiris.
Any bar should be able to whip something non-alcoholic up for you. I'm not sure you'll find any non-alcoholic wine.