Did get my victory. Emperor, playing Pineappledan's Inuit custom civ, went Progress/Artistry/Rationalism/Freedom, settled 15 cities. Inuits put a relatively decent amount of culture on tiles (3 from UI, 3 from fish turning into Seals), so I used that along with Holy Sites buffed by Theocratic Rule, landmarks, and my Gold+Lapis monopolies to convert that culture into tourism with Hotels, Stadiums and the like. Also took Sacred Sites as Reformation. Finished the CEP on turn 423, at which point I was getting 2881 tourism per turn.