P kept saying we would catch the "C Bus" when we got downtown. Okaaay; Insane Diego, we identify the buses by their route numbers, not letters.
It was only when we got downtown, just barely in the nick of time to catch it, that I understood he was saying the "Sea Bus"! They run day and night, back and forth .
And because we only had (literally) 30 seconds to catch it, and I am a befuddled tourist, I managed to pay for our ride twice with my credit card. Sheesh.