If you're at MK, I like LeFou's Brew - it's very sweet. That's not really a "mocktail" though, if that's what you're after. Trader Sam's has a few, so if you want to check out the atmosphere, you could go there. I have had the Poisonless Dart at Jock Lindsay's Hangar Bar - it's mint & lime - like a Mojito I think. It was pretty good.
I haven't actually been, but Oga's Cantina has a bunch of them looking at the menu. One of them, the Blurrgfire, was even an actual drink the characters on Star Wars: Resistance would order. It has lemonade, pomegranate, and habanero-lime flavors - sounds good!