No idea, but at the moment, good large sections are closed. It's a half a day park at most right now unless you are my son aiming for ToT 14+ times in a day (really! I counted!).
Half day park at most?
I'm going to be very conservative and still prove it's not.
Assume you FP Toy Story, Tower of Terror, and Star Tours. RNR gets done first thing at rope drop. Let's look at the time commitment to do MOST (still not all) of the things there are to do at HS. Ride times include getting to, and into, the attraction and getting re-organized as a family after. Non-fast pass attractions such as the Movie Ride include a minimum wait. Shows assume you arrive about 10 minutes early to ensure seating. I'm also assuming only one meal is eaten at the park.
Toy Story - 20 minutes
Tower of Terror - 20 minutes
Star Tours - 20 minutes
RNR - 20 minutes
Great Movie Ride - 35 minutes.
Muppets - 30 minutes
Beauty & the Beast - 35 minutes
Indiana Jones - 40 minutes
Frozen Sing-Along - 35 minutes
Voyage of the Little Mermaid - 35 minutes
One Man's Dream - 30 minutes
Disney Junior - 30 minutes
Fantasmic - 45 minutes
Star Wars Fireworks - 20 minutes
Toy Story Characters - 30 minutes
Star Wars Characters - 45 minutes (combined Chewbacca and Kylo Ren)
Characterpalooza - 20 minutes
Lunch - 45 minutes
Bathroom Breaks, Minimal Shopping, Photopass Opportunities - 40 minutes
That's about 10 hours and does NOT include Jedi Training Academy, several character meet & greets, marching Stormtroopers, the Star Wars stage show, etc.
Quite simply, Hollywood Studios is not remotely a half-day park unless you've been there a dozen times or skip attractions/activities that don't interest you. But, for those that don't go often and/or are interested in the full experience the park has to offer, it's very tough to get done in a full day, let alone when the hours are shorter in the Winter (which is when the OP indicated they were going).