Go on the cruise, if you feel that the persons serving you have failed in their duty of care talk to the Purser, failing that pay the suggested amounts and be happy to do so. .... Ida.
Usually on P&O unless your on Freedom Dining then the tips are paid in £ cash on the last night it would depend on you length of cruise as to how much? the only people expecting one are the cabin attendant and your table waiters you will get envelopes and a card in your cabin telling you the recommended amounts which you can adjust up or down as you please you may also tip any one else you wish to.You will not get anything added to your drinks as tips if your bottle of wine is £15 they only charge you that ?For 14 nights it should be about £100 and you could ask if they would like some of it in Euroes ?
Thank you for your useful advice.