Stroll through the gardens, have lunch beside the Grand Canal (a packed lunch allows you to avoid Versailles' tourist traps), and take tea in the grounds of the Petit Trianon.
You are not allowed to drink alcohol on the grounds of the Petit Trianon.  
mnli hypothesis: You are not allowed to drink alcohol on the grounds of the Petit Trianon.   premise: Stroll through the gardens, have lunch beside the Grand Canal (a packed lunch allows you to avoid Versailles' tourist traps), and take tea in the grounds of the Petit Trianon.