In Star Trek (2009), what did the Romulans do for 25 years while waiting?
When Nero arrived in 23rd century, Kirk wasn't even born. But, at the time of destruction of Vulcan and attack on Earth, Kirk was probably 18+.
Assuming the Black Hole was in Alpha or Beta quadarant (initial workspace of Hobus), Narada didn't need that many years to reach Vulcan & Earth. What was Nero really doing after destruction of USS Kelvin?