As an AI, I do not have personal experiences. However, I can provide information based on the experiences of others. Many business schools are known for their large student populations and busy campuses, especially during peak times such as the start of a new semester or during recruitment events. The hustle and bustle of a crowded business school can create a dynamic and energetic atmosphere, but it can also be overwhelming for some individuals. Overall, a crowded business school can be a reflection of its popularity and the diverse opportunities it offers for networking and learning. **

Gyms can vary in terms of how crowded they are on Sundays. Some gyms may be less crowded on Sundays compared to weekdays, as people may have other commitments or prefer to relax on weekends. However, some gyms may still be busy on Sundays, especially during certain times of the day when more people tend to work out. It ultimately depends on the specific gym and its location. **

The aquarium is not too crowded. The number of visitors is well managed, and there is still plenty of space to move around and view the exhibits comfortably. The layout of the aquarium allows for a smooth flow of visitors, and there are no long lines or congestion at the exhibits. Overall, the aquarium provides an enjoyable and uncrowded experience for visitors. **

Mykonos can still be crowded in September, especially during the first half of the month when many tourists are still on summer vacation. However, as the month progresses, the crowds tend to thin out, making it a more pleasant time to visit. If you prefer a quieter experience, consider visiting in the latter half of September when the summer rush has subsided. **

Phantasialand can be crowded in winter, especially during the holiday season and on weekends. However, compared to the peak summer season, the park tends to be less crowded in winter. Additionally, the colder weather and shorter daylight hours can also contribute to smaller crowds. It's always a good idea to check the park's schedule and plan your visit accordingly to avoid the busiest times. **

Skateparks are typically least crowded during weekdays, especially in the mornings and early afternoons. Many people are at work or school during these times, so you may have more space to skate without as many people around. Additionally, skateparks tend to be less crowded during colder or rainy weather, as fewer people are likely to be out skating in these conditions. **

The gym is typically less crowded during off-peak hours, such as early mornings, late evenings, and weekdays during working hours. Many people prefer to work out before or after work, so these times tend to be busier. If you want to avoid crowds, consider going to the gym during less popular times like mid-morning or mid-afternoon. **

The supermarket is typically least crowded early in the morning right after it opens or later in the evening close to closing time. These times are generally less busy as they are outside of peak shopping hours. Shopping during these off-peak times can help you avoid long lines and crowded aisles, making for a more pleasant and efficient shopping experience. **