They will take your tank if it is out of date. Yes they fill the tank you bring. If its half full the fill it. You ounl pay for what the tank holds. Yes you can buy tanks from them.any size you may need or maby a 1lb.for you picnic.
They only do refills. No tank exchange
No they only fill bottles. Go to Fred Meyers, Home Depot, Lowes, or several gas stations do exchanges for $18-$20
I don't know. Maybe.
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