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This process can take several months to completion , so plan ahead if you might need to go this route . Some of them are open to the public ; call ahead if you 'd like to attend . In almost all cases you can still enjoy their outstanding grounds and scenery - - but it 's wise to call ahead if you want to tour inside any buildings . Although virus-laden attachments can appear to be of any file type , you 'll be ahead if you keep out the usual suspects . Via Rail 's trains , the Canadian and the Skeena , offer holiday travel packages but need to be booked well ahead if you want to get a sleeping compartment . " Even though it is not very stable , you can come out ahead if you follow the market closely . Classes and other groups use the greenhouses , so it 's a good idea to call ahead if you want to be sure to see all of the available greenhouses . I 'm not taking this personal , but it really made me think of my selfish relatives who believe you ca n't get ahead if you keep helping others . It 's advisable to call ahead if you want to tour the grounds , but you can also obtain a Visitors Pass from the guard at the main entrance . The Discovery Center hosts a lot of birthday parties on Saturdays , and the hours of the planetarium shows vary to accommodate ; best to call ahead if you want to stargaze on the weekend .