There are times that I have to take a call when I’m with a group, or at a party. Is it rude for me to leave the room to take my call?
No, not rude at all, and in fact, it is the polite thing to do. If you remain where you are, those with you feel they have to stop talking so you that can hear, (and end up listening to your conversation, which is awkward for everyone). Conversely, you have no privacy for your call. By all means, find a quiet corner or another space to conduct your call.
I’ve been invited to a few celebrations where it has been stated on the invitation, “No Gifts Please.” I’m never sure what to do, because if I comply with that request and other guests arrive with gifts, I feel as though I’ve done something wrong. Should I take a gift, regardless?