Value for there services?

Value for their services means he cant just give the money away. He can be excessive but he has to get some kind of services for what he is paying for. Paying a huge amount for security is OK provided they actually provide security. He paid the photographer so teh guy could take pictures. He could NOT just say "here is $100k, now go away". Its up to the executor of the will what value meant.

He could spend as much as he wanted to in a day.

It means he has to get something for paying them. For example, he hires Jake to take pictures of him, he isn't just paying Jake to do nothing. And he could spend as much as he could in a day, although to even it out, it would be 1 million a day for 30 days.

As to your second question, he can spend as much as he wants to in a day. In fact, after Spike makes him 10 million, which puts him back at 30 million again, he has to spend more than a million a day to catch up.