The Atlas Lions progressed unbeaten from Group C after collecting seven points against Brazil, Scotland and Haiti, narrowly missing out on top spot to the South Americans on goal difference.
Despite the encouraging run, Ouahbi stressed that the next stage of the tournament presents an entirely different challenge.
"In the last three matches, we showed that we are capable of producing good performances and that we have a strong personality on the pitch," Ouahbi said on Sunday.
"But tomorrow's match is different and requires different solutions. That is the mentality with which we will enter the game."
Morocco opened their campaign with an eye-catching 1-1 draw against Brazil before edging Scotland 1-0 and securing a 4-2 victory over Haiti to maintain their unbeaten record.
Their opponents also arrive in strong form after finishing with seven points following wins over Sweden and Tunisia, along with a draw against Japan.
With both nations carrying recent World Cup pedigree - Morocco reaching the semi-finals in 2022 and the Dutch advancing to the quarter-finals - Ouahbi acknowledged there will be little room for mistakes.
The coach revealed that squad management had already become a major focus during the group stage, particularly in the final match where changes were made to keep players fresh for the knockout rounds.
"From a physical point of view, in the third match we succeeded in managing the playing time in the way we wanted," he said.
"I was keen to distribute the playing time across the squad so that every player had the opportunity to participate. That also allows the whole team to be in the best possible condition."
Morocco showed different strengths throughout the group phase - defending resolutely against Brazil, protecting a narrow advantage against Scotland and recovering from an early setback to beat Haiti.
Ouahbi kept his tactical plans for the Netherlands under wraps but insisted his team would remain faithful to the qualities that brought them this far.
"We will continue to do what we are good at in the best possible way," he said.
Brazil defender Marquinhos has warned his teammates that Japan will provide a serious test when the two sides meet in the round of 32 at the 2026 FIFA World Cup, insisting the knockout stage requires a new level of focus.
South Africa made history by making it past the group stage of a FIFA World Cup tournament for the first time before bowing out to co-host nation Canada.
Bafana Bafana's historic journey at the 2026 FIFA World Cup came to a painful end after a 1-0 defeat to Canada in Los Angeles on Sunday night, but Hugo Broos' men leave the tournament with plenty to be proud of.
Bafana Bafana coach Hugo Broos believes South Africa's historic FIFA World Cup campaign should mark the beginning of a new era rather than a once-off achievement.
