If you are beautiful, rich, and famous or at least want a side of glamour with your seared ahi tuna salad, you might consider R+D Kitchen, a chic eatery on Santa Monica’s boutique-y Montana Avenue (1323 Montana Ave., near Euclid). Though from the sidewalk the atmosphere appears to be one of overflowing bustle (no reservations are taken), those who manage to snag a table may well feel a sense of comfort and serenity. The winsome waitstaff, crisply attired in white uniforms, are as friendly as they are attractive, like the idealistic young doctors of a TV drama. Some actual celebrities may be glimpsed here as well, since the restaurant, just across the street from the Aero Cinematheque, provides convenient grub for the nonprofit’s special guests. Vegetarians will not find many choices, however. Putting aside the spinach and cheese omelet and a few ordinary side dishes, one is left with the unprepossessing house-made veggie burger. Formed from brown rice, mushrooms, carrots, and almonds, the patty is slightly sweet, not dry but not crisp either, with sporadic crunchiness from the nuts. Like the patty itself, the condiments lean toward the mild: melted jack cheese, avocado, mayo, and tomato slices, with a heap of fresh arugula and a bit of red onion, all on a buttery, soft roll that felt heavier than it needed to be. (The fries, prepared in the style of pommes frites, are tasty enough.) Though vegetarians may justifiably visit R+D Kitchen for the scene, they’re unlikely to return for the food. But, as the ever-present crowds attest, that’s probably beside the point.