I am 8 months post op from RNY and what I can tolerate has expanded quite a bit even in just the past few months, after I made it past the 6-month mark especially. You're still healing right now and the next 12 months or so will be very different than the rest of your life that comes after.
I love tacos, but instead of filling up on tortilla, I often make a taco salad and just crumble a few tortilla chips on top. Or I order fajitas and eat the meat/veg/cheese but leave the tortilla (or just eat a bite or two if I really want it, which is all I can really manage without getting too full). Ice cream, chips and queso, guac are all fine and I do eat them sometimes as a treat. Try eating guac with carrots when you're okay to have raw veg. It's delicious and very healthy in moderation.
Falafel is still a bit filling and too low in protein, but I would take a bite or two. Mac and cheese and pad thai would be pretty low on my list as the noodles are just so heavy. Like, they don't even sound good any more. I do like spaghetti made with spiral zucchini, though. Maybe you could make homemade pad thai using spiral veg instead of the noodles? You could eventually try the Banza chickpea mac and cheese as it's much higher in protein, though right now, I find it's so heavy I don't like it.
Over the next several months, you will be able to eat a lot more, both in types and quantity of food. My advice is focus on developing a good routine and keeping your food at 80-90% of the healthy foods like lean protein, veg, and fruit. If you do that, you can indulge in a favorite snack every few days, or maybe one meal a week that isn't so nutritious, or go for ice cream a couple times a month, and it's no big deal. You just can't do it every day. And I suggest not buying anything tempting for your house. I go for a scoop of ice cream at a local farm but I won't keep it in my freezer because I would want it every day.