Time Traveller

You tell Joe that you'd rather hold up the receptionists and he nods his agreement. Wasting no time, you and the outlaws saddle up and ride into town. Your heart is hammering and beads of sweat are forming on your forehead as you all come to a stop outside the hotel.

The hotel is a tall, brightly-coloured building with plenty of space out front to tie up horses. There are people moving in and out of it all the time. As you climb out of the saddle, Joe discreetly hands you a colt pistol.
"Do your thing," He grins.

Nervously, you enter into the hotel, concealing the gun beneath your lab coat. The interior is luxurious, with red carpets, highly polished bars and attractive waitresses walking around with trays of drinks.
"May I help you, sir?" A receptionist smiles pleasantly at you from behind the desk. You take out the colt and aim it at her, pulling back the hammer and trying to keep your hand from shaking.
"Yes, I'd like all the money from the safe, please," You tell her.

The girl looks absolutely terrified, and you feel a pang of guilt. You console yourself by reminding yourself that you're not going to hurt her.
"Of course, s-sir. Right away!"
The patrons of the bar and the waitresses are are staring at you open-mouthed, and you wave the colt in their general direction.
"No-one try anything stupid," You warn them. No-one moves. The receptionist beckons you into a back room where a heavy safe stands in one corner.
"Open it," You order her. She twists the dial with trembling fingers and swings the iron door open.

Heading across to the safe, you fill your arms with the sacks of money, still keeping your pistol trained on the receptionist as you leave.

"Hold it right there, buddy," A voice orders. You whirl around to discover a man in an expensive suit aiming his own pistol at you.

Your arms are filled with money, but you might be able to fire a shot off and panic the guests. Alternatively, you could just make a break for it.

What do you do?