To Toastmaster Or Not?

My family are keen to get a toastmaster at the wedding, so much so they will pay for it. I can’t really see the point of one (but then one of the first weddings I will attend will be my own) and I’m worried it will set a “formal” tone to the day when this is something I want to avoid. I am also concerned that the Toastmaster (a stranger) will be too involved in our day. Conversely, my family think it would be unfair/ too much of a responsibility for anyone attending the wedding to take on this role. Am I underestimating the value of a Toastmaster? Perhaps I should be more grateful and learn to pick my battles!