I have some experience in the Signature at MGM Grand. But to answer your question no there is no self parking available- it is all underground valet. The HOA includes onside security, water, sewer, basic cable, consierge and common area maintenance and it is $500/ month for the studio or JR suite you inquired about. One word of caution, it is very difficult to get financing for the condo-hotel units and some banks are requiring 40-50% down in order to qualify! If I can be of help please do not hesitate to contact me directly!