It may be best to plant into raised beds for best drainage, but if you do this, it will be even more important to water the tree. Water immediately to firm soil around the roots and then again in a day or so. Apply a two to three inch mulch around the tree and renew as necessary. Water regularly the first year to thoroughly moisten the soil to a depth of 12 inches. Do this when the soil gets dry two inches deep.
Cherries get a few pests.
Bot canker kills back small and large branches from the tip. Look for browning under the bark and cankers on stems. Cut out the dead wood until you reach the green wood, and water and lime the plant to promote good plant health. There is no spray for it. Ambrosia beetles bore small holes into stems and branches.