GNC is known for its helpful staff and quality service. Customers appreciate the assistance from employees like Jordan, who consistently provide excellent support, prompting some to travel further for this experience. However, there are occasional issues with the store's opening hours, as doors may not open on time. Another employee, Robin, has received praise for her generosity in offering discounts, making shopping more affordable during tough economic times. Overall, GNC offers a positive shopping experience with friendly staff and valuable customer service, although timely openings could be improved.