The phrase "advised to order" is correct and usable in written English.
It can be used in contexts where someone is being recommended or instructed to place an order for something.
Example: "After reviewing the options, customers are advised to order the product before the sale ends."
Alternatives: "recommended to purchase" or "suggested to buy".
Babette and I were strongly advised to order more water.
Attendance is capped at 157,000, so it is advised to order tickets in advance; see www.rhs.org.uk.uk
We had been strongly advised to order the lamb for two, and it elicited the following reactions: Michel: It melts in the mouth.
Anyone going to the Italian restaurant Osteria Antica Bologna in Battersea, south London, in the next few days would be well advised to order the pumpkin ravioli.
The menu is divided into dishes "from sushi bar" (made by Kosugi) and "from kitchen" (made by his wife), plus a page of sushi nigiri and rolls, and each person is advised to order a dish or three from each of them.
It is worth bearing mind that the best laid plans can get waylaid by an unexpected flurry of snow or other unforeseen incidents, so if you know what you want you would be well advised to order as soon as you can.
In that respect, if nothing else, Australia are heading in the right direction, despite Saturday's seventh straight loss to New Zealand, a long flight from Japan and the distraction of Tuesday's trip to Kingsholm, where they would be ill-advised to order the sushi.
He advised us to order the mast khiar, a mixture of yogurt, cucumbers, and herbs, with the ghormeh sabzi.
The tacos are $4 each, but our waiter advised us to order at least three different ones if they were to be a main course.
Powell had reluctantly advised Clinton to order in commandos to help hunt down a warlord bedeviling an American-led humanitarian effort.
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