The KYC obligation at Roobet is only at level- 1 and it has been implemented several years ago and for all accounts, both new and old but there are no documents that have to be uploaded, just fill in the address and some data (I don't remember exactly another data are) and you can still withdraw your funds at any time and maybe the next level of KYC will be applied based on the deposit amount and also withdrawals for each account so not all accounts will be required to carry out KYC at the next level, you just have to be careful when filling in data at level 1 because if the data is fake there might be problems at a later time when you are required to upload documents.
Roobet Sportbook is the same as most sportsbooks, there are no specials and if we look for the difference in odds I don't think it will be a significant difference between bookmakers.