Modern 2.4GHz RC systems are very good at channel hopping so should hopefully avoid a lot of interference. A lot of us fly in our back gardens with WiFi around. As long as the WT aerials aren't basically touching it should be ok. Don't forget as well that Yuneec have now provided 5.8GHz as a redundancy on one of the later software updates.Worst comes to worse the ST16 control will drop and it should go into failsafe and RTH until control is regained. Here's proof of how great modern RC systems are, long video but you get the idea within the first 30 seconds: