refill the tender if needed, the train crew will perform a boiler blowdown and maintenance service on the locomotive. In the final segment of the train's journey around the park, it goes through a two-percent grade tunnel adjacent to the TRON Lightcycle / Run roller coaster attraction. Afterwards, the train passes the Space Mountain roller coaster attraction in the Tomorrowland section, and travels over a small bridge before it arrives back at Main Street, U.S.A. Station. This completes what the park refers to as The Grand Circle Tour. The WDWRR closes temporarily during heavy thunderstorms. During the Magic Kingdom Parade events, the trains are halted for approximately 15 minutes due to parade floats crossing over the WDWRR tracks in the Frontierland section. Personal strollers and wheelchairs were allowed on board the train, excluding rental Disney strollers and electric conveyance vehicles. All of the stations had disability ramps access for the wheelchair passengers to board the train. Since August 1999, a separately-priced tour of the WDWRR named Disney's The Magic Behind Our Steam Trains Tour has been available once on Sundays-Thursdays, and includes access to the railroad's otherwise-restricted roundhouse. At the end of the tour, the guests were originally given free railroad spikes as souvenirs, but due to the September 11 attacks in 2001, the spikes were dropped in favor of the enamel pins. In 2020, the tour became unavailable due to the COVID-19 pandemic. Rolling stock When working on the line, each WDWRR locomotive consumes of fuel and of water per hour, and each tender can hold of fuel and of water. Each of the four locomotives takes on water at Fantasyland Station every three trips and pulls a set of five passenger cars with seating capacity for 75 passengers per car, for a total of 375 passengers per train. The front passenger car had a disability ramp for the two wheelchair passengers to be loaded on. Occasionally, locomotives and their passenger car sets will be switched when either one is out of service. The locomotives do not contain brakes, but the passenger cars do. In the past, all four locomotives received overhauls at the Tweetsie Railroad in Blowing Rock, North Carolina. Since 2010, overhauling services have taken place at the Strasburg Rail Road in Strasburg, Pennsylvania. Daily operation Early in the morning at 5:30 A.M., the first train crew arrives at the WDWRR's roundhouse to get the first train