@heavanet- You should probably use a permanent fabric glue and forget about having your jacket dry cleaned. Though this is probably not the option you prefer, sometimes you have to make sacrifices with special items like your embellished jacket.
Another option might be to have your glued-on embellishments replaced with the kind that are sewn into place. A professional seamstress should be able to do this for you at a reasonable price. Once you have your jacket's embellishments permanently sewn onto it, you won't have to worry about having it dry cleaned or getting it wet.