Will kids enjoy it? That’s what is really important about the national tour of “Dr. Seuss’ How The Grinch Stole Christmas! The Musical,” now in Fort Lauderdale for its six-day run at the Broward Center for the Performing Arts. Yes, they will. The musical has just enough theatric pow to keep children — more or less — engaged for 90 minutes without an intermission. There’s Seuss-esque sets, sparkly lighting, paunchy costumes, puppetry, fog machines, super-silly sight gags, sing-along prompts and … just when you think they’re almost done … a real wow special effect (nope, no spoilers here). Now as for you — the adult — that’s a different matter. There are no plot twists or surprises for grown-ups who grew up on this story, which was a 1957 children’s book later made into the classic 1966 animated TV movie.