Celebrate Tumwater Trading Post’s Grand Opening on Friday, May 23rd, 2025 with 25 cents per gallon off of fuel, BBQ, and prizes – including a brand new PlayStation 5! Trading Post stores are owned and operated by the Squaxin Island Tribe, and your support helps social and economic development projects. Tumwater Trading Post is open from 5am to 10pm at 7000 Littlerock Rd. Southwest.