Waikiki Beach and Hawaii vacation tips with cheap things to do in Oahu Hawaii as outdoor activities. Waikiki bike sharing can be an easy activity to do on same day as hikes, beaches, snorkeling in Kailua, Lanikai, Honolulu, North Shore. Oahu map for planning. Put biking rental in Waikiki on the checklist of Oahu activities for Hawaii bucket list destinations! USA travel destinations for world adventures! So put outfits on the Hawaii packing list for what to wear and what to pack for Hawaii!