Anne
I looked up those plants and none of them want to be planted in standing water, but soil that is kept moist. You may want to put some drainage holes into the tub or plant the tub and check it regularly for moisture. Whichever you prefer. Then I would put the soils those plants are particular to into the tub and plant the plants and keep them moist.
I would love to see pictures when you have your tub planted.
