We got married with literally just parents and siblings, had our honeymoon, and then had our reception 2 weeks later.
I wouldn't have changed the way we did it - but for some reason forgot that it meant I would have to pay for photographer, hair and makeup twice. Also, had to get my dress cleaned in between the wedding and the reception. All of the extras do add up. But we both loved the way we planned it, and had nice tans at the AHR to boot!