More than 7000 people turned up at Seymour Square in Blenheim yesterday to catch a glimpse of the royals, police say.
Marlborough area commander Inspector Simon Feltham said staff at the event estimated between 7000 and 10,000 people turned out to see William and Catherine.
Extra police staff were brought in from Nelson, however Feltham would not comment on how many police were on duty.
"We are very pleased with how it went," he said.
"There were no security breaches and the crowd was well-behaved."
A 3-year-old girl and a young boy went missing in Seymour Square, but both were found in less than an hour, he said.
St John Marlborough territory manager Murray Neal said one person was taken to hospital and three others treated at the scene by ambulance staff.
All four people were elderly, he said.
Three collapsed while the other person was diabetic, he said.
- The Marlborough Express
Is the region better served by having multiple events over one weekend or spread out throughout the year?Related story: (See story)