Amy Welch is at Oswald Road Primary School in Chorlton where the Brownlee brothers have just arrived to talk to pupils.
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The 28-year-old was stuck at Amsterdam's Schiphol airport on Monday morning - but did eventually get her flight.
The parade begins at 4.30pm and an event for the athletes will be held in Albert Square at 5:30pm.
Team GB and Paralympics GB's Rio stars will be paraded through Manchester on Monday to celebrate their achievements.