Visitor Visa - B2

In my first trial I got refused because I had no travel history and I could not prove that I am capable to pay for my trip. Actually, my all accomodation expenses are going to be paid by my fiance’s father, I will just pay for my food. It was our mistake to write that I was going to pay the trip because we already got the tickets and booked the car. My fiance’s father paid all these, I can prove that. Before applying for second application I am also going to travel to England to have a travel history. My question is do you think it is a good idea to tell my fiance’s father will sponsor me? We will go all together and my fiance, fiance’s father and mother has visas. Please please help!! It is really IMPORTANT!!!!