No, it would not bother me at all as long as you had water or other non-soda refreshment like iced tea available.Stop and Shop has their brand soda bottles for 75cents and another store has Coke brand for $1.50 each. I would like to save the money and get the cheaper soda.
That said, for only 75¢ a bottle, I would never do it. How big of a party is this? 20 bottles of pop is only a $15 savings. Depending on the size of the party and how much pop I needed, 75¢ a bottle is not significant enough for me to serve off brand soda. Actually, I would never do it no matter the size - it is one of my weird stickler things. Instead, I would be watching for sales on name brand sodas. During the summer, our local grocery store seems to have bottles of soda on sale every other weekend for 99¢ a bottle.