Add punctuation: Visitors may bring their own beverages and picknick at tables in the area or at the reception building where drinks and ice creamare sold
A: Visitors may bring their own beverages and pick-nick at tables in the area or at the reception building, where drinks and ice cream-are sold.

Add punctuation: As a student I attended their courses and seminars and was introduced in an unusually personal way to the world of mathematics
A: As a student I attended their courses and seminars and was introduced in an unusually personal way to the world of mathematics.

Add punctuation: The revolutionary IDV File Analysis Tool scans analyzes and reports back every detail about your IDV file
A:
The revolutionary IDV File Analysis Tool™️ scans, analyzes, and reports back every detail about your IDV file.