I would give the following advices for any of these problems.
1. One parent can try to sleep with the daughter in her own bed for the first period. When she falls asleep, the parent can leave her alone or sleep with her during all the night. In this way, the girl may overcome her fears and the parents won’t become desperate.
2. Maybe the boy needs of counselling about his problem, because in unusual that a seven-year-old son continues in wetting the bed at night.
3. Don’t worry about this, if the baby prefers to breast-feeding instead of solid food, after the meals you can give her some milk with feeding bottle.
4. I don’t know what can be the answer on this behavior. But when it happened to my two-year-old son in some outside places, I given to him my cellphone and he became calm on seeing cartoons.
5. Probably the boy needs more attentions by his parents at home. For example he may play with them and became relax.