Mergui island trips from Grand Andaman hotel

Is there possibility to visit some of the islands of Mergui by daytrip from Grand Andaman hotel at Thatay Khyun island ?

Are there other resorts in Mergui ? Don't like to join in a cruise.

Entry Myanmar at Mandalay and exit at Kaw Thaung is that possible ?

Thanks for your replies

Mark Verfaillie