Is it safe to do vigorous exercise 9 hours after Botox?

I have an appointment to get my regular Botox done tomorrow. I usually go about my usual day afterwards, but skip the gym that night. My doc says it’s fine (even for vigorous exercise) after 4 hours, but I’m one of those people that likes to get a second (or third or fourth) opinion. Meanwhile, it just dawned on me that tomorrow is also the day I committed to interview at a gym I’d like to teach at by putting on a cardio bootcamp class. Injections at 8:30am, class at 6pm. Safe?