Thank you, Erik. As you would expect from what you just heard, we're especially proud of our continued progress, and it is my pleasure to provide a little color with respect to the numbers Erik shared with you. Addressing revenues, we were pleased with the $597 million we achieved for the first quarter, nearly $2 million, above the top end of our guidance with the outperformance, drive principally from incremental membership dues and dynamic personal training. Adjusted EBITDA of $146 million was at top end of our guidance, and we achieved a 24.5% adjusted EBITDA margin for the quarter. As pleased as we are at our progress here, we're going to reiterate our previously issued adjusted EBITDA margin expectation of 23.5% to 24.5% for this year.
Consistent with absolutely normal predictable seasonality, a portion of their revenue gain we anticipate for the middle of every year will be from summer activities, which generate incremental EBITDA, but at lower margins. Even more gratifying Access membership at the end of Q1 2024 were $802,000, which is substantially above our expectation. This overperformance has been a direct result of the strategic initiatives we have previously discussed with you, which include pickleball, ARORA and a small group training and the improved member retention we're currently experiencing, which is the best we have ever seen.
Additionally, we believe we have some membership pull forward into the first quarter from the second quarter as some people joined earlier in anticipation of the full season. Average dues were 186 a month, in line with our expectations. Based on the positive trends we're seeing in our business, we're raising our revenue and adjusted EBITDA guidance modestly. Our full year's revenue guidance is now $2.5 billion to $2.53 billion, and our adjusted EBITDA guidance is $603 million to $618 million. Our priorities for this year remain growing revenue and adjusted EBITDA per our guidance; second, delivering positive free cash flow. We're on track to achieving this objective during the second quarter, and we expect to remain free cash flow positive going forward. Finally, reducing our net debt leverage ratio to under 3x sooner than later and certainly before end of the year. Lastly, I want to personally thank each and every Life Time team member for your relentless commitment to delivering the ultimate experience from the member point of view, which drives the amazing financial results we're enjoying today. Thank you.