The simple answer is yes, you can. However, there are some things you need to keep in mind when considering this option.
There can only be one credit card per Ads account. That means that if each of your campaigns requires a different credit card, they will all have to have separate Ads accounts. As a result, if you want access to each account in Ads directly, you’ll have to have a separate login for each, or you’ll need to set up an MCC account to access them all.
However, if you plan to simply use the Respage dashboard to access your Ads reports and data, you’ll still be able to do that all from one simple dashboard using one login, even if you have multiple accounts.