The retailer bought 34 stores from the collapsed First Quench Retailing estate, making it the biggest purchaser.
Although the fascias were in place, most of the stores had yet to receive "the full Rhythm & Booze makeover", said MD Martin Swaine, who aims to spend nearly £1m upgrading the stores, including refrigeration, tills and renovation.
"The new stores are integrating well and the customers love our prices, which are more competitive than they were when they were run by FQR," he said. "Only three have had a full refit. The rest will take the rest of the year to properly sort out."
Each store would be looked at individually to ensure its range fitted its customer base, he added.