your food and drinks. And Club Med Baby Welcome ensures that parents need not worry about packing cots, buggies, bottle warmers, food or nappies. Many of the resorts also have a crèche service for babies from four months of age. From France to Mexico

Sibling rivalry is greatest when the age gap between children is between 18 months and two years; it is lowest when the gap is much smaller or larger than this. It doesn’t only affect first-borns – second and third children can resent a new baby too

days; 11–17 years £158; 5–10 years £127; under-fives free. (Three- and four-day, and daily tickets also available). Extend your stay Stay at family-friendly Woolley Grange near Bath with activities for the children and babysitting and pampering for you