After downloading theme packages, exact theme package. The file you use to upload is a zip file named Royal Hotel. Following these steps below to upload theme via WordPress:
Step 1. Dashboard >> Appearance >> Themes >> Add New.
Step 2. Click Upload Theme button.
Step 3. Browser royal-hotel.zip file in your computer and click Install Now button.
Step 4. Active Sailing.
Step 5. Enable Thim Core to activate the core of Royal Hotel and start importing demo data process.