Hopefully, you will find a sales person with whom you are comfortable. It's your money and you have a right to spend it as you wish. Don't buy on impulse. If a salesperson tries to push you, find another salesperson. If the dealership makes you uncomfortable, find another dealership.
Most dealerships have several styles and models of RVs from which to choose.
Be sure to compare apples to apples, as the old saying goes. Compare travel trailers with other travel trailers and campers to other campers. Ask questions, take notes, pick up manufacturer's brochures, and go home and compare your wants and needs to what you have seen. If you're a novice buyer. Rentals Driving an RV isn't difficult, but it certainly is different.