If you are looking at UUIDs vs. autoincrement or some other sort of integer based key, the main differences from the database perspective are:
1) UUIDs require more storage space than auto-increment and indexes on these columns will be less efficient. However, your tables are small enough that you are not likely to see a significant difference between using UUIDs as opposed to auto-increment keys.
2) UUIDs have no order, so you can't use them as an indicator of when a row was inserted compared to another row.
HTH,
--Jason