Doesn't the glove box have to be locked too?
You can take it into your hotel room place your staying and have it loaded and on you within the building!
Was in Myrtle Beach just last month and had a GREAT time! Keep your weapon (unloaded) and mag separate and both in compartments you'll be fine while traveling. Talked with several sheriffs while their and they were extremely nice and helpful about visitors having weapons legally!
At least this was my dealings with them! Hope you have a safe trip!