The sukkah is a symbol of fragility. We build the temporary structure each year and know that it is only meant to last for the week-long holiday. It sways in the breeze. The raindrops land inside. The animals nibble at our decor. We know it could come crashing down on us.
Spread over us the sukkah of Your peace. Blessed are You O Lord, who spreads out a sukkah of peace over us, over the entire people Israel, and over Jerusalem.
In Israel, it is not unusual for guests to drop in for a visit without prior notice. In such cases, they are likely to get a light snack or impromptu meal.