Since many people have said it's funny and can't wait for season 2, I'm interested in watching this drama. I want…
I regard Welcome to Waikiki and screenwriter Park Jae Bum's comedies, namely Chief Kim, The Fiery Priest and Vincenzo, top tier comedies! I don't wanna directly influence you to watch The Fiery Priest but I highly recommend to watch at least the first episode (1 out of 20 or 2 out of 40) to see how the comedy feels for you.
Short answer: Yes, to me it feels quite similar to Waikiki in tems of comedic style and timing, although to be fair The Fiery Priest also handles some heavier themes, while Waikiki was purely comedy.
The female lead's character is horrible. Usually those type of characters have at least some short of character development but until episode 16 there's still none... :(
3 
4 
Short answer: Yes, to me it feels quite similar to Waikiki in tems of comedic style and timing, although to be fair The Fiery Priest also handles some heavier themes, while Waikiki was purely comedy.
That aside, it was still kinda cute although not spectacular in any way. I've seen better and I've seen worst.
The soundtrack 100/100 I swear, some songs have been on my current list since I started watching the drama!!