多选题 Questions 178~181 refer to the following information. TRAVEL TO NACU CONFERENCE Airline Arrangements Sky High Air and Mountain High Airlines will serve as the official carriers for attendees of the Forty-Fourth Annual NACU Conference. Both carriers have agreed to offer low fares for conference attendees. To obtain information on discount airfares, call Sky High Air at （800） 555-7382 and refer to convention Number CV786309 or call the mountain High Airlines Reservation Desk at （800） 555-7382 and refer to convention Number HJ987.

Ground Transportation The trip from Rushmore Airport to downtown hotels is about 15 miles and takes 45 minutes by shuttle bus or car. By Shuttle Bus: Airporter （708）555-9541 0ffers a shuttle bus service :from the airport to the Fairmont Hotel and the Regency Hotel. Departure time is every 20 minutes from 9:00 am to 8:00 pm and every 30 minutes from 8:00 pm to 11:00 pm. The Airporter main desk is located on the lower level, near Exit B. No reservations are required, but tickets must be purchased at the Airporter main desk, at the conference registration desk in the convention center, or at the travel agency located in the Regency Hotel. Tickets are not available directly from the shuttle bus drivers. 

Shuttle Bus One-Way Fares Shuttle Bus Round-Trip Fares By Taxi: Adult ＄9.00Adult ＄14.00 Taxis are readily available outside Child ＄4.00 Family ＄17.00 Child＄6.00 Family ＄26.00 Exit C in the main terminal Appropriate fare to downtown hotels is $18.00-$25.00 Parking For attendees driving to the conference, Parking is available at both hotels. The Fairmont Hotel provides parking for $15.00 per day, with in/out privileges. The Regency Hotel offers parking for $8.00 0n Saturday, and $6.00 on Sunday. 

How much does it cost to park at the Regency Hotel on Sunday?