Is it okay to stay in a hotel on the first day and go to a scenic spot on the second day?

It depends. If you are traveling with a group, you should follow the itinerary. If it is free travel, it depends on personal preferences. Generally, if you arrive before noon, you should stay in the hotel to have a rest, and then go to the scenic spots where you can swim for half a day in the afternoon. If you arrive after 3 pm, you should stay in a hotel first, then have a meal or something. It's getting dark, so it's more reasonable to travel the next day.