Look at the blue verbs in the text.
I’m just so glad you can afford to visit me and I refuse to let you pay for anything ... …I’d tell you a bit about what you can expect to find. To avoid getting confused about the British tipping system, you need to check your bill… I suggest leaving 10% of the bill for the waiter or waitress … … I advise you to get some of those before you come. I think we should consider staying in the English countryside for a few nights as I know you enjoy hiking. … so we won’t risk getting sick.