Weatherboy, sorry to hear about your injury - ouch! I have been travelling handicapped on CO for the past 11 months and they have been stellar! IAH is notorious for not having wheelchair attendants, but I've come to expect it so my expectations are low. Glad you didn't have to miss the 777 sim and can't wait to hear about that experience - be glad it's your left foot!

I tip according to the service I receive - it has cost quite a bit more since I was injured (including more Y and A flights, but good for CO ), and the service varies wildly though I've never heard sob stories about being underpaid. Most seem genuinely pleased when I tip and I do tip the cart people too.

Glad to hear your trip went so well! Keep healing!