I was a volunteer last summer at place which arranged a number of festivals, and together with a professional sysadmin I helped maintain their booking system, internet cafe, random stuff etc.

The atmosphere was pretty relaxed to start off with, but the sysadmin I worked with suggested that we would take it to the next level: Every morning we would walk around the office and give everyone sitting by a computer a five minute massage. During this time we bonded with them physically, asked them about their day and if there was anything we could help them with. The "results" were amazing. I have never become friends with so many people so quickly, and have never had customers so polite. Like the time when I accidentally erased all emails from the IMAP server, they just smiled and said: Don't worry, they'll just have to mail us again.

I guess my point is that I agree with the OP, but if you have made a strong emotional connection, the words you chose are less important. They will love you anyway.