yes
Yes. Quiche can be frozen: http://missourifamilies.org/quick/foodsafetyqa/qafs310.htm
Yes. Quiche can generally freeze pretty well.
make a quiche and then freeze it throw in oven when ready to eat.
It depends what's in the quiche. Vegetarians who eat eggs will eat quiche as long as it contains no meat and any cheese included is vegetarian. However, quiche is made using eggs, and some vegetarians do not eat eggs. Most vegetarians who eat eggs only eat free range.
2 days
Although many Jews enjoy a good quiche and it is possible to make a kosher quiche, quiche are French in origin.
It depends on the type of quiche. If it contains any form of dairy it can be kept unrefrigerated for up to two days, however you should keep it covered.
You can eat quiche whenever you want
Yes. As a matter of fact, heavy cream would make a lovely quiche. Just don't whip it too long or it will solidify.
There are photos of quiche at the related links.
Yes you can put tomato in a quiche you can also put in a quiche pepper bacon tomato mushroom.