I do like to ask if it is totally normal for the characters to just not Terastalize on their Pokémon during gym battles and fight the Paldean gym leaders like normal head on.

I remember that the gym leaders have at least one Pokémon that is not of the type they specialize in so I would be interested in coming up with clever ideas of handling the Paldean gym battles if, let’s say, Harry wants to challenge Iono during the trip and he has to fight that Misamagius of hers at some point but he didn’t brought his Tera Orb at all.