Costco Wholesale is a members-only warehouse known for its extensive selection of items, including bulk groceries, electronics, and more. Customers appreciate the variety of products available, from food and clothing to a food court, pharmacy, and optical services, all offered at great prices. The 2% Executive Reward program is highlighted as beneficial, even for smaller households. The Seattle area location is favored for its wide range of common items, making it a preferred choice over busier competitors like Tukwila. While the overall experience at Costco is positive, some shoppers have noted less-than-friendly interactions with staff, particularly a cashier who exhibited a poor attitude. The store can get crowded, especially during peak hours, but parking is manageable early in the day. The eating area is well-equipped with heaters and offers a comfortable spot to enjoy meals. Overall, Costco Wholesale is celebrated for its value and customer loyalty, despite occasional congestion and staff issues.