Whilst there's no info on the reverse of this photo, those present define the location!
I’ll make the introductions:
Dad on the far left, with Auntie Ella his sister and Uncle Joe, Ella's husband. Then we have Amelia McElroy, Mum, Vera, one of Amelia's younger sisters and Lilian Andrew, Mum's very dear friend. This is the evening entertainment at the Bay Hotel with Eric Andrew's Band. Bandleader out of shot.
Ella & Joe were regular visitors from Sheffield, had no children and very kind to Peter, Michael and I. Amelia & Vera were sisters of Henry McElroy, who you 'met' on 17 April. They spent many years with us, Amelia stayed for the rest of her life in the IOM, working with Dad until his death in 1968.
Lilian and Eric were good friends to our family, had no children and we all enjoyed their company. Lilian and Mum were close friends for the rest of their lives. Eric is out of shot and IMHO was an ace drummer. He was exceptionally kind to Michael, 16, when Dad died.
Everyone looks in good spirits in this great memory shot. Your interesting family must have had many stories about hotel guests and the hotel business.