Solo, give Skyviews Miami Observation Wheel a miss.
A quick, breezy way to get an elevated skyline-and-bay view from an air-conditioned gondola, nicest at sunset. The catch: at around $20 a head it's a modestly tall ride (~200 ft) that's overpriced for what it delivers — a pleasant ~12-15 minute spin you'll forget by dinner. Fine as a five-minute lark with kids, not a reason to come downtown.