The entertainment at Raglan Road is only in the evenings. Starting at about 8:00, the Maitre De warms up the crowd by playing a keyboard and leading everyone in singing Irish pub songs. The band comes on at roughly 9:00, and they are very good. The dancer with come out periodically through the evening after that, accompanied by the band.
If you make an ADR for 7:30 or 8:00, you should be there for the music.