If I send some bitcoins to some address, and I pay the proper fees, how sure am I that it will be included in the next block? Are there any guarantees if I want my payment to be included in the next block that is mined?
Actually just pay recommend fees you can get your transaction sent less than 10minutes. Guaranteed
is there no limit to the number of transactions in a block? what if everybody pays recommended fees? so some will still not make it? am i right?
there is a limit to that. more transaction means more size, and the block size are limited to 1mb