If bees are going to invade your backyard, I'd say the perfect time for that to happen is the day before leaving for vacation.
The bees came on Tuesday and we left early (early!) on Wednesday morning for the Sunshine State. We returned home yesterday afternoon and the bees had already packed their bags and moved on. (Which is perfect because I hadn't intended inviting thousands of bees to Vance's birthday party, which will be going down this weekend.)
Here's a couple of pics from our trip. I'll be back with more once I get things organized around here.