I do hope that because I always try to provide the client with the best time they can have, it is appreciated. I would rather see the appreciation on their face, a few good words and hope they have good memories for a long time rather than be insulated by 20 quid for a week
This doesn't add up.
The guy has spent out the thousands for his week at the bucks.
You have done the job he paid you to do.
He has fulfilled your criteria of appreciating your work and has obviously had good memories, because he asked for you again the following year.
Where is the insult?
You obviously do base it entirely on the financial value if you see £20 as an insult.
As that is the case, if both you and your boss think it was not enough, then you should at least let the clients know what is expected, rather than leave them in the dark and moan about it afterwards.
The client is buying your guidance after all. So give him the guidance as to how much the week is going to cost without the mystery and risk of disappointment for you.
Alan
PS As a self employed artist craftsman I have never received or expected a tip from a client. I design and give a quotation and have to stick to it whether at my loss or gain. All the projects are "One-Offs" so that introduces an element of chance just as in your bad weather or bucks in the next estate problems.
My future work depends on the 101% I put in to every project and the resulting portfolio.
A returning client, or a client's recommendation to others is certainly my best extra-curricular reward.