Viking Emerald - Imperial Jewels of China July 2013

Just booked the above trip, first time on a river cruise.

Please could anyone help? We will need money for tipping, souveniers, additional drinks, but what other expenditure is there?

What's the dinner dress code in both the hotels and on the boat? Staying at the Westin Hotel in Bejing, will we be able to get a meal there when we arrive, or is there other options nearby?

Will it be very hot in July?

Any other useful information would be gratefully appreciated.

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