I know some comments were made about tips genuinely not being expected, but having the perspective of knowing many guides, I have to say that's simply not the case. Yes, Disney doesn't mention tipping your guide and also doesn't make it easy to do so, but the vast majority of guests do tip and, right or wrong, guides do expect it. They are paid very little- think similarly to what other front line CMs make, and part of this is due to the fact that Disney knows generous guests will bridge the gap for them.
Whether you tip your guide well or an amount they find offensive, they should accept anything they are given graciously. It would be extremely unprofessional for them to do otherwise. However, I also have been told by some of the guides that I know that they won't host a family again if the tip is less than a certain amount. I'm not saying this approach is right but am simply sharing the reality of how some view things.
Amounts guides receive as tips vary enormously, but I've been told that post-pandemic tips have generally been better than they were pre-Covid. Again, though, there is a lot of variation. I know some guests don't tip their guides at all and then I'm also aware of times when guides have received tips of 50%+. Some guests choose to tip a percentage of the overall cost of the tour, an amount per person on the tour, or the cost of one hour, although other guests just choose to give a flat amount. Like I said, it's kind of all over the board.
I feel that stating a certain amount you should tip is a probably bit out of line, but if there's a question as to how much to give, I would err on the side of being generous. Doubly so if the guide is pushing a stroller, dealing with a wheelchair or
ECV, staying out to watch kids while the rest of the group goes on rides, or if you extend beyond the 7 hour minimum. Yes, the tours are very expensive, and it may be hard to swallow the idea of tacking a large tip onto that, but, again, the guides don't get paid much by Disney and work hard to give your family a fantastic day.
I hope you have a great tour!