"But we've had to learn to accept that they all want to work in the business that they grew up in and around. They have a genuine interest in the business and the hospitality industry and they've chosen this path of their own accord," Miller says.
Family firms list a number of benefits of intergenerational business: there's a clear understanding of each other's strengths and weaknesses, a strong sense of trust, flexibility in working arrangements and the ability to combine experience with new thinking and skills.
But you have to take the rough with the smooth. In contrast to the stereotype that the younger generation can ride on the coat-tails of their parents' success, 88 per cent of younger-generation respondents in PwC's research said they had to work harder than others in their family businesses to prove themselves.
Succession can be another tough topic to tackle. James MacQueen, a partner at BDO that specialises in family business, says members of the younger generation in family businesses are often eager to take up the reins, but find the pace of change frustratingly slow. For the older generation, the primary challenge is the emotional baggage around letting go.
To prepare for succession, MacQueen talks about the need to progress through the "four Ls": learning business, learning the family business, learning to lead the family business and learning to leave.
"Learning to leave is the hardest stage," he says. "In my experience, the older generation need a project or an activity to move on to otherwise they will be reluctant to let go."
As with all relationships - in family and business - communication is key. "Working with family is a big no-no according to many. Personally, I can say it is the best thing for our business, " says Nick Blair, who runs Bay of Plenty firm BOP RV with his mum and dad, Joan and John.
"I think you just need to remember everyone has different strengths, to talk all things through and presume nothing," Blair says.
"Good communication is the key for us, as is an appreciation of each other."