Tickets were issued quickly. However, there were no discounts for same-day purchases.
The scenery of Slender West Lake is beautiful, living up to its reputation. I went at the end of October, and it wasn't crowded. It was a great experience. The South Gate is the main entrance; just follow the recommended route. Generally, you only need to walk up to the Twenty-Four Bridges; beyond that, it's all man-made attractions.
The rowing boats on Slender West Lake are excellent. Although a bit pricey, the service is exceptional. The staff are very professional and provide detailed explanations throughout the trip. I recommend taking one. It takes about 40 minutes from the South Gate to the Twenty-Four Bridges.
Walking from the South Gate to the Twenty-Four Bridges takes about two hours. The entire visit takes about three hours. During peak season, with crowds taking photos, it might take four hours.