I went a little overboard with this one and ended up with 4 branches, but hey, variety is the spice of life! If your Sim dreams of being a Hotelier, then this is the perfect career to choose!
You can use MC Command Center to promote your Sim (From a computer in-game, click Cheats>Career>Promote), OR if you have UI Cheats Extension you can right click on a job icon in the career panel to promote or demote your Sim, OR the cheat below if you don’t want to complete the objectives.
To pause a level, and keep your current job title, and have MC Command Center, you can “freeze career” under Sim Flags.
Cheats available: CAREERS.PROMOTE HOTEL
There are 5 levels available after which you can choose from 1 of 4 branches. Then you have another 5 levels to play through! There are wayyy too many descriptions for me to post here, so I'll leave you with the job titles instead!

Branch 1 (Hotel Management)
Branch 2 (Food Operations)
Branch 3 (Front-of-House)
Branch 4 (Event Planning)
You’ll work on a few different skills, but if you don’t want to do these, you can just right-click on them in the career panel to complete them, if you have the UI Cheats Extension Mod (see above) installed.
To install, extract all the files in the zip directly to your Mods folder. Full instructions for installing CC can be found HERE.
CREDIT: Neia | Jenba (some screenshots are of her amazing spa hotel, which I adore!)
UPDATED JUNE 7TH 2020