We will be in Kauai for our first time Feb 24. - have rented a car and Poipu Beach condo. Arriving about 5pm. Questions: Is it better to shop at Costco(or other big box store by Lihue airport) before heading down to Poipu? Better selection there? A big price difference? We want to stock up on things and then get seriously lso, dinto relaxing!! Asoes anyone know where we would find those short legged Beach chairs? Thanks in advance for you help.