Holiday on the Buses (1973) on Netflix

Sacked by the bus company Stan and Jack get jobs as drivers ferrying punters to and from a holiday camp and arrange for the rest of the family to come and stay. Blakey is there as the chief security guard and manages to get caught in accidental compromising situations with the camp's nurse. The Butlers head for one disaster after another as Jack and Stan,still chasing women half their age,take two girls for a bus trip on the sands only for the bus to sink in as the tide approaches. Olive gets into bed with someone else's husband when she makes it back to the wrong chalet in the dark and 'little' Arthur sprays the chalet with ink,requiring a re-painting job. The holiday over Arthur's sidecar combination manages to come apart on the way out as it did on the way in.