What time will they go to National Park in the morning?

M: Hi, Tess. What are you going to do tomorrow?
W: Hi, Tom. I don’t have much to do. Do you have anything interesting in your mind?
M: Yes, I do. Shall we go for a picnic tomorrow? Let’ s go to National Park. I’ ve heard so much about the beautiful scene there.
W: Good idea. When shall we start?
M: What about seven o’ clock in the morning. I’ ve got some drinks and several kinds of food.
W: Good. I’ ve just bought some bread. And I’ 11 go to buy a roast duck. Then we won’ t feel hungry during enjoying the view. We’ 11 certainly have a good time.
M: Wonderful. Shall we ask Jack and Mary?
W: OK! They are free tomorrow, too. I think they would be glad to go with us. Will you tell them about it?
M: I’ m sorry. I am going to attend a birthday party this evening.So it would be kind of you to invite them.
W: All right. See you tomorrow!