Tonks had been offered an assignment by someone outside of the London ministry branch who needed someone familiar with the Diagon alley area rather than investigate himself.
There was a wizard supposedly lurking around muggle areas who lured them in for the imperius curse to use for Voldemorts bidding.
She had, had words with the owner to give her a temporary waitress position, as the leaky cauldron was a favoured place of the suspects.
The young man who had asked her to investigate for him was somewhere in the crowd.
Insisting she morph herself, still remaining recognisable, Tonks had chosen Dark caramel hair, tied back in a long ponytail and a paler skin tone. Keeping her dark eyes and unfortunately her clumsiness, she'd broken almost four glasses and plates, tripped over customers' feet and walked into the corners of tables.
Carrying a pre-prepared christmas dinner she walked beside Remus and placed it infront of him, her wand tucked away in the band of her black skirt.
She wasn't paying much attention to who the customers were but instead scanned the crowd with her eyes.
"Here is your order, sir. Merry christmas," She mumbled to him, placing his wine down last, before turning to walk away.