Lucky 3!3!3! event

1. Saw this:

http://i19.photobucket.com/albums/b1...aple0029-1.jpg

Does this mean you should get an event stamp if you open 10 gold boxes?

2. You can keep doing the 300 kill quest even after you've killed 3x300 enemies and received a gold box. Can you get more than 1 gold box a day by killing 3x300 enemies again?

Thanks in advance.

I'd guess so. This should go well with some ToT quests I need to do :f7:

BTW, is there a list of rewards from the boxes?

Yes, you can get more than one gold box. I've gotten 3 so far.