Ramp worker reported a safety concern of a charter aircraft required to park at a LAS FBO congested ramp; in an area that has no markings; lighting; clearance zones; or load bearing chart information.

Narrative

Per Las Vegas airport authority; all charters are to operate out of the FBO (fixed based operator). The area is extremely congested with private jet aircraft as well as helicopter touring aircraft. Safety concerns have been repeatedly expressed but no one at the airport is willing to make changes. The charter aircraft was Aircraft X. Concerns were once again expressed because this aircraft needs significantly more operating space. FBO is where the aircraft parks; the ramp team at the FBO doesn't measure; they eyeball what they think will work. There is no specified parking spot; no taxi lines or clearance zone markings on the ramp. There is no lighting at night; which has made night operations dangerous. Yesterday's operation required the crew to have the aircraft turn on the ramp and then shut and be pushed backward into its spot. There were private jet aircraft on both sides of the area where the aircraft would be positioned. Ramp connected and pushed backwards; due to aircraft surrounding the tractor; driver snapped the tow bar. Knowing that the company only had one aircraft specific tow bar; he continued with the push. Despite preaching safety; our employees are feeling the pressure to complete the task because we are not giving them the tools or support needed.