I am not a "senior" member of the group, but I've been around a while and will step forward and say thank you. This can be a confusing place and I have often thought we should have a brief FAQ about the expected etiquette on FT.
Your error was not an egregious one and the fact that you bothered to post an apology says a great deal about you.
I hope that even after you have finished your story, you choose to stick around.
Whether you travel frequently or rarely, on leisure or on business . . . there are many great people here who you can learn from.
Best regards,
-levi aka eastwest