Stayed CL main building for one night NYE 2017 and a week this past Christmas at SL CL.
Although our stay in 2017 was limited got a pretty good idea of the advantages and disadvantages of the 2 locales. Want to store a large bottle of wine and it won't fit in your room's fridge? Walk to the main building's bell service as the SL doesn't have a full kitchen.
Have a perishable package delivered to the GF? Walk to the main building to pick it up quickly or wait for Bell Services to deliver it at an additional 10.00-15.00 charge. Actually the charge is the same whether you stay at the main building or not but but it's certainly easier to pick it up when staying at the main building during rainy weather.
Great views with no upcharge for the MK fireworks from the balconies of some rooms at the Sugar Loaf since the terrace juts out further than other rooms. We stayed in room 6311, which is also a wheelchair accessible room. About that accessible room - the automatic door opening was a mixed blessing. Great when bringing lounge offerings back to the room to consume once you pushed the heavy door up to the point the electronic system set in. Took forever to close so don't start changing your clothing when opened as all the world waiting for the elevator will see into your room for a minute ot two, LOL.
Rooms overlooking the interior courtyard of the lounge will be loud.
Don't recall what the nightly price difference is between the two different CL rooms but if it's more than fifty dollars I wouldn't pay for the main building.
I will say that the perishable goods delivered to the hotel were from Petrossian and Passmore Ranch and included four jars of 15-30 gms of caviar for a personalized tasting.
Was truly peeved that after being stored properly at the main building it turned out that our room's refrigerator was unplugged and we lost everything. Steeling myself for a "Battle Royal", I explained the loss to the lounge's concierge (always on duty as long as the lounge was open) and we recieved full credit for the cost. Was pleasantly surprised that Jordy was sympathetic and gave me no argument even though I'd come prepared with almost all the receipts and proof of delivery I thought was needed.
Nice touch to have the equivalent of a night's stay removed from the bill even though I weally
weally wanted to eat the goodies and the bottle of Champagne I purchased especially for the caviar returned home w/ us. Sighhhh for first world issues gone wrong.
Next trip we are returning to BWI's CL since it's our current fav and cost less too

.