Can you say more about this? What do you mean by "Once you get to selenium it's usually over", and how do you manage cold starts in Selenium and emulating heavy usage?
Say your program starts right now, I assume you don't go through "adding heavy usage" to "warm-up", then get down to business, correct?
Travel information is also one of those services where it’s not weird for a significant number of their users to use it quite heavily, making behavioral detection more difficult.