What needs to be paid in cash on an all-inclusive Egypt vacation? [closed]

I'm travelling to Egypt this month for a weeks honeymoon and staying in an all-inclusive resort in Sharm El Sheik. I do not require taxi money, transfer is included nor do I want any excursions. I will have a credit card for emergencies but would rather not incur the oversea usage fee. So far I could think about two things that would require some cash:

• Upgrading the restaurant once or twice
• Tipping staff on departure

How much would that typically cost in Egypt? What else would need to be paid in cash?