Those planning to visit Paris for France's bicentennial celebrations should make hotel arrangments as soon as possible, according to the French Government Tourist Office.

While many of the city's hotel rooms are still available, accommodations are expected to be exceptionally tight in July when the celebrations peak at the same time that Paris plays host to an economic summit meeting (July 14 to 16).Rooms at the city's grand hotels in particular are likely to be at a premium during that period. For example, the Leading Hotels of the World Group reports that the Plaza-Athenee is fully booked from July 1 to 18, the Bristol July 14 and 15, the George V July 13 to 17, the Crillon July 12 to 22 and the Ritz July 12 to 17. Major airlines flying to France report that bookings are brisk for July, and they also suggest booking early.

A list of 40 American-based French hotel representatives and tour operators is available from the French Government Tourist office, 610 Fifth Avenue, New York, N.Y. 10020; 212-757-1125.

---- If that open road keeps calling and you want to answer, "Motorcycle Touring: An International Directory - 1989-90" from Whitehorse Press can help. The 328-page directory provides information on the routes of 145 guided trips in the United States and abroad.

The book offers background information on 33 tour operations, including the level of comfort that riders can expect, the areas covered, information about the kinds of motorcycles available and whether to rent or bring your own, and dates and prices of tours.

A typical trip is a two-week tour through the Swiss Alps - the cost for two is about $7,000 for accommodations and food, round-trip airfare from the eastern United States, motorcycle rental and other expenses - but the guide also includes information on weekend trips and on a 43-week odyssey from Munich to Africa.

According to Whitehorse's publisher, Dan Kennedy, who spent two weeks last year riding in the Alps, the choice of tours ranges from "cushy to pretty primitive."

"Motorcycle Touring," which costs $19.95 plus a $3.50 handling charge, is available from Whitehorse Press, 154 West Brookline Street, Boston, Mass. 02118.; 800-842-7077 or 612-482-3350.