Boat Trips & Mud Baths

My adult family, hubby and myself are coming home to Icmeler in less than 4 weeks and can't wait. We are all looking forward to going on some boat trips, but my daughter has just found out she is pregnant. She will be about 14 weeks when we go and is not sure if she should go on the boat anymore. Has anyone been while in early stages of pregnancy and recommend it? She doesn't get sick at the moment, but feels sick and thinks the boat trip would probably make her ill! She was going to go on the jeep safari, but has vetoed that now, too dangerous. Any comments would be appreciated.
Thanks Jean
Thanks Jean